[{"from": "human", "value": "Given SMILES, write its Mw at room temperature and atmospheric pressure. ->  CC(S1)=CC2=C1C(C3=CC=C(OCC(CC)CCCC)S3)=C(C=C(C4=C5C(C(F)=C(C(C(CC)CCCC)=O)S5)=C(C)S4)S6)C6=C2C7=CC=C(OCC(CCCC)CC)S7\n"}, {"from": "gpt", "value": " 34.6\n"}]