[{"from": "human", "value": "What is weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure? ->  CC1=C2C(N=C(CCCCCCCC)S2)=C(C3=CC=C(C4=CC=C(C)C=C4N5C(CCCCCC)CCCCCC)C5=C3)S1\n"}, {"from": "gpt", "value": " 43\n"}]