[{"from": "human", "value": "Write a possible SELFIES of given compound. ->  Norethisterone\n"}, {"from": "gpt", "value": " [C][C][C][C][C][C][Branch1][P][C][C][C][=C][C][=Branch1][C][=O][C][C][C][Ring1][O][Ring1][#Branch1][O][C][Ring1][S][C][C][C][Ring2][Ring1][Ring1][Branch1][C][O][C][#C]\n"}]