2-Octenoic acid,7-[(chloroacetyl)oxy]-4,8-bis[[(1,1-dimethylethyl)diphenylsilyl]oxy]-,(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl ester,(2E,4R,7R)- [ 881663-86-1 ]