NC76793
3′-Guanylic acid, N-benzoyl-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-[2-(4-nitrophenyl)ethyl]adenylyl-(3′→5′)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-, mono[2-(4-nitrophenyl)ethyl] ester