[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. 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 is functionally related to a 3',5'-cyclic GMP."}, {"from": "gpt", "value": "[C][C@@H1][C@H1][Branch2][Ring1][=N][C@H1][Branch2][Ring1][Branch2][C@@H1][Branch1][Ring2][O][Ring1][Branch1][N][C][=N][C][=C][Ring1][Branch1][N][=C][Branch1][=Branch1][N][C][Ring1][=Branch1][=O][N][O][O][P][=Branch1][C][=S][Branch1][Branch1][O][Ring2][Ring1][=Branch1][O]"}]