[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at normal measurement conditions.. ->  CC1=CC(C2=C3SC(CCCCCCCCCCCCCCCC)=C2)=C(S1)C4=C3C=C(C5=CC(OCCCCCCCCCCCCCCCCCCCC)=C(C6=NC(SC(C7=C(OCCCCCCCCCCCCCCCCCCCC)C=C(C)S7)=N8)=C8S6)S5)S4\n"}, {"from": "gpt", "value": " 22.7\n"}]