[{"from": "human", "value": "Write Mw of given SMILES at normal measurement conditions.. ->  O=C1C(C2=C(C3=CC=C(C)S3)N1CC(CCCCCCCC)CCCCCC)=C(C4=CC=C(C5=CC=C(C)C=C5)S4)N(CC(CCCCCC)CCCCCCCC)C2=O\n"}, {"from": "gpt", "value": " 143.0\n"}]