US 10,698,314 B2  85  86  -continued  -continued  XR’  0  0  iQ-{  XR’  XR"  0  0  0  0  0~  0  XR’  0  0  ~  ~  ’Ok  ’01:  H0>---10 HO}-JJJ  0  0  XR’ XR’ XR’  ‰::  ~~H  \OH  0  ~~~cc  OH  OH  OH  q  (h  O  - O~OHL  OH  o  OH  In the case of a monomer having a hydroxyl group, the  hydroxyl group may be replaced by an acetal group suscep-