[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at room temperature and atmospheric pressure? ->  CC(S1)=CC(OCCCCCCCC)=C1C2=NC(S3)=C(S2)N=C3C4=C(OCCCCCCCC)C=C(C5=C(CCCCCCCC)C=C(C6=CC(CCCCCCCC)=C(C)S6)S5)S4\n"}, {"from": "gpt", "value": " 56.6\n"}]