[{"from": "human", "value": "What is Mw of given SMILES at room temperature and atmospheric pressure? ->  O=C1N(CC(CCCC)CCCCCC)C(C2=C(C3=CC(SC(C)=C4CCCCCC)=C4S3)SC(C5=CC6=C(S5)C(CCCCCC)=C(C7=CC8=C(OCC(CCCC)CC)C9=C(C=C(C)S9)C(OCC(CCCC)CC)=C8S7)S6)=C21)=O\n"}, {"from": "gpt", "value": " 167.7\n"}]