[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure. ->  O=C(N1CC(CCCCCCCCCC)CCCCCCCC)C2=CC3=C(C(N(CC(CCCCCCCC)CCCCCCCCCC)C4=C3SC5=C4SC(C)=C5)=O)C=C2C6=C1C(SC(C7=CC8=C(OCC(CCCC)CC)C9=C(C=C(C)S9)C(OCC(CCCC)CC)=C8S7)=C%10)=C%10S6\n"}, {"from": "gpt", "value": " 69.3\n"}]