3'-Guanylic acid, 5'-O-(bis(4-methoxyphenyl)phenylmethyl)-P-(2-chlorophenyl)-2'-deoxy-N-(2-methyl-1-oxopropyl)guanylyl-(3'.5')-2'-deoxy-N-(2-methyl-1-oxopropyl)-, 2-chlorophenyl 2-cyanoethyl ester 78098-94-9 EINECS 278-834-1