Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-O-[1,4-dioxo-4-[[6-[[3-(trihydroxysilyl)propyl]amino]hexyl]amino]butyl]-N-(2-phenoxyacetyl)-

5′-Guanylic acid, 7-(3-chloro-2-hydroxypropyl)-2′-deoxy-