SMILES: C1[C@@H]2[C@H]([C@H]([C@@H](O2)N3C=NC4=C3N=C(NC4=O)N)O)OP(=S)(O1)O
Description: The molecule is a nucleoside 3',5'-cyclic phosphorothioate having guanine as the nucleobase (the Sp-stereoisomer). It is a nucleoside 3',5'-cyclic phosphorothioate and a member of purines. It derives from a 3',5'-cyclic GMP.