Chlorethoxyfos
Chlorethoxyfos ( "O" , "O"-diethyl-"O"- ( 1 , 2 , 2 , 2-tetrachloroethyl ) phosphorothioate ) is an organophosphate acetylcholinesterase inhibitor used as an insecticide . 
<triplet> Chlorethoxyfos <subj> insecticide <obj> instance of