[{"from": "human", "value": "Given SMILES, write its number-averaged molecular weight at normal measurement conditions.. ->  CC1=CC2=C(C(OCC(CC)CCCC)=C(C=C(C3=CC(/C=C/C4=C(CCCCCC)C=C(C5=CC=C(C6=CC(CCCCCC)=CS6)C7=NSN=C75)S4)=C(C)S3)S8)C8=C2OCC(CC)CCCC)S1\n"}, {"from": "gpt", "value": " 3.63\n"}]