[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure. ->  CC1=C2C(C(N1CC(CCCCCCCCCC)CCCCCCCC)=O)=C(C3=CC=C(C4=CC=C(C5=C(CCCCCC)C=C(C6=C(F)C(F)=C(C7=CC(CCCCCC)=C(C8=CC=C(C9=CC=C(C)S9)S8)S7)C%10=NSN=C%106)S5)S4)S3)N(CC(CCCCCCCC)CCCCCCCCCC)C2=O\n"}, {"from": "gpt", "value": " 1555\n"}]