[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at normal measurement conditions.? ->  CC1=CC2=C(C(SC(C3=CC=C(C4=C(OCCCCCCCC)C(OCCCCCCCC)=C(C5=CC=C(C)S5)C6=C4N=C7C(C(C=CC=C8)=C8C9=C7C=CC=C9)=N6)S3)=C%10)=C%10C(OCC(CC)CCCC)=C2OCC(CC)CCCC)S1\n"}, {"from": "gpt", "value": " 10.5\n"}]