[{"from": "human", "value": "Given SMILES, write its number-averaged molecular weight at room temperature and atmospheric pressure. ->  CC1=CC2=C(C3=CC=C(CC(CC)CCCC)S3)C4=C(C=C(C5=CC=C(C(N(CC(CCCC)CC)C6=O)=C7C6=C(C8=CC=C(C)O8)N(CC(CC)CCCC)C7=O)O5)S4)C(C9=CC=C(CC(CCCC)CC)S9)=C2S1\n"}, {"from": "gpt", "value": " 1097\n"}]