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