[{"from": "human", "value": "Write number-averaged molecular weight of given SMILES at normal measurement conditions.. ->  CC1=CC(N(C2=CC=C(N(C3=CC=C(OCC(CCCCCC)CCCC)C=C3)C4=CC=C(OCC(CCCCCC)CCCC)C=C4)C=C2)C5=C6C=CC(C7=CC=C(C8=C(N=C(C9=CC=CC=C9)C(C%10=CC=CC=C%10)=N%11)C%11=C(C%12=CC=C(C)S%12)C%13=NSN=C%138)S7)=C5)=C6C=C1\n"}, {"from": "gpt", "value": " 3.3\n"}]