[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at normal measurement conditions.? ->  CC1=CC=C(C2=CC=C(C3=CC=C(C4=C5C(C(N4CC(CCCCCCCCCCCC)CCCCCCCCCC)=O)=C(C6=CC=C(C)S6)N(CC(CCCCCCCCCC)CCCCCCCCCCCC)C5=O)S3)S2)S1\n"}, {"from": "gpt", "value": " 1165\n"}]