[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at room temperature and atmospheric pressure? ->  CC1=CN=C(C(N(CC(CCCCCCCCCC)CCCCCCCCCCCC)C2=O)=C3C2=C(C4=NC=C(C5=CC(C=C(SC(C)=C6)C6=C7)=C7S5)S4)N(C[C@H](CCCCCCCCCCCC)CCCCCCCCCC)C3=O)S1\n"}, {"from": "gpt", "value": " 3.98\n"}]