[{"from": "human", "value": "Given SMILES, write its Mw at normal measurement conditions.. ->  CC1=CC(C2=C/3C=CC(F)=C2)=C(S1)C3=C(C4=C5C=C(C6=CC([Si](CCCCCCCC)(CCCCCCCC)C7=C8SC(C)=C7)C8S6)S4)/C9=C5C=C(F)C=C9\n"}, {"from": "gpt", "value": " 78.0\n"}]