[{"from": "human", "value": "Write number-averaged molecular weight of given SMILES at normal measurement conditions.. ->  CC1=CC(SC2=C3C(C4=CC(CCCCCCCCCC)=C(CCCCCCCCCC)S4)=C5C(C(SC(C6=C(F)C(F)=C(C)C7=NSN=C76)=C8)=C8S5)=C2C9=CC(CCCCCCCCCC)=C(CCCCCCCCCC)S9)=C3S1\n"}, {"from": "gpt", "value": " 23\n"}]