Benzamide, N-[9-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-L-ribofuranosyl]-9H-purin-6-yl]- [ 1803193-36-3 ]