29  US 7,649,118 B2  30  containing alkyl group or a fluorine-containing alkyl group  having ether bond because transparency can be enhanced  when used for a resist.  For example, preferred are norbornene derivatives repre› sented by the formula (18):  is bonded directly to the norbornene backbone.  The norbornene derivative is one having a fluorine-con- taining alcohol structure represented by the formula (8):  wherein Y1, Y$^{2 }$and Y$^{3 }$are the same or different and each is H,  F, Cl, an alkyl group having 1 to 10 carbon atoms or a fluorine› containing alkyl group which has 1 to 10 carbon atoms and  may have ether bond; Rf\ R 3 ,  R and n are as defined above.  In the norbomene derivatives of the formula (18), it is  preferable that Y$^{1 }$and Y$^{2 }$are H and Y$^{3 }$is F or CF  3 ,  or Y$^{1 }$and  Y$^{2 }$are F andY$^{3 }$is For CF$_{3}$ .  Examples of the norbomene derivative having fluorine- containing alcohol structure of the present invention are:  in which R:t4 is the same or different and each is a fluorine› containing alkyl group having 1 to 10 carbon atoms or a  fluorine-containing alkyl group which has 1 to 10 carbon  atoms and ether bond, R $^{3 }$is Hor a hydrocarbon group having  1 to 10 carbon atoms; Y is the same or different and each is H,  F, Cl, an alky 1 group having 1 to 10 carbon atoms or a fluorine› containing alkyl group which has 1 to 10 carbon atoms and  may have ether bond; R is the same or different and each is H  or an alkyl group having 1 to 10 carbon atoms; n is 0 or an  integer of from 1 to 5; mis an integer of from 1 to 5; nl is an  integer of from 1 to 5; m +nl =6.  In the norbornene derivative may be contained one or a  plurality of moieties Z $^{4 }$of fluorine-containing alcohol, and it  is generally preferable that one or two moieties are bonded.  Examples thereof are:  In those norbomene derivatives having fluorine-containing  alcohol structure, it is preferable that Y is selected from those  of the above-mentioned norbornene derivatives having  ketone structure, and particularly preferably is F, a fluorine- wherein  Y,  Rf\ R 3 ,  Rand n are as defined in the formula (8).  C-OH  I  ,  R3  Rf’  I  r-OH,  q  Rf’  Rf4  I  C-OH  Cl  C-OH  I  I  R3  R3  RA!4  I  H  HO-C  C-OH  I  I  ’  R3  R3  Rf4-C-R 3  I  OH  Rf’  I  -C-OH  I  R3  wherein Z $^{4 }$is the same or different and each is:  H  H  H  H  n  R  Y\....___/~  R  (Y)m  (Z $^{4}$)nl  Rf’  I  -C-OH  I  R3 