[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure. ->  CC1=CC2=C(C(SC(C3=C(CCCCCC)N=C(C4=NC(CCCCCC)=C(C)S4)S3)=C5)C5C6=C2C=C(C(CCCCCCCCCCC)CCCCCCCCCCCC)S6)S1\n"}, {"from": "gpt", "value": " 42.0\n"}]