[{"from": "human", "value": "What is weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure? ->  CC1=C2C(C(N(CCCCCCCC)C2=O)=O)=C(C3=CC([Si](CC(CCCC)CC)(CC(CCCC)CC)C4=C5SC(C)=C4)=C5S3)S1\n"}, {"from": "gpt", "value": " 44.8\n"}]