[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at room temperature and atmospheric pressure. ->  CC1=CC2=C(C(C3=CC(OCCCCCC)=CC(OCCCCCC)=C3)=C(C=C(C4=CC=C(C5=C(CCCCCCCCC)N=C(C6=NC(CCCCCCCCC)=C(C7=CC=C(C)S7)S6)S5)S4)S8)C8=C2C9=CC(OCCCCCC)=CC(OCCCCCC)=C9)S1\n"}, {"from": "gpt", "value": " 58.8\n"}]