[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at normal measurement conditions.? ->  CC1=CC2=C(C(C#C[Si](C(C)C)(C(C)C)C(C)C)=C(C=C(C3=CC(OCCCCCCCCCCCCCCCCCCCC)=C(C4=NC(SC(C5=C(OCCCCCCCCCCCCCCCCCCCC)C=C(C)S5)=N6)=C6S4)S3)O7)C7=C2C#C[Si](C(C)C)(C(C)C)C(C)C)O1\n"}, {"from": "gpt", "value": " 11.3\n"}]