9-(((Z)-4-(ethylidenyl)-2,3-dimethoxy-delta(alpha,beta)-butenolide)-5'-O-phosphono-beta-D-furanosyl)adenine 3'-(1-(adenin-7-ylethoxy)methyl)phosphonate
9-(((z)-4-(ethylidenyl)-2,3-dimethoxy-delta(alpha,beta)-butenolide)-5'-o-phosphono-beta-d-furanosyl)adenine 3'-(1-(adenin-7-ylethoxy)methyl)phosphonate