[{"from": "human", "value": "Write number-averaged molecular weight of given SMILES at normal measurement conditions.. ->  CC1=CC2=C(C(C3=CC=C(CC(CCCC)CCCCCC)S3)=C(C=C(C4=C(CC(CC)CCCC)C=C(C5=CC6=C(C(SC(C7=CC(CC(CCCC)CC)=C(C)S7)=C8)=C8C9=NSN=C96)S5)S4)S%10)C%10=C2C%11=CC=C(CC(CCCC)CCCCCC)S%11)S1\n"}, {"from": "gpt", "value": " 14.3\n"}]