[{"from": "human", "value": "What is number-averaged molecular weight of given SMILES at normal measurement conditions.? ->  CC1=CC2=C(C(CCC(CCCCCC)CCCC)=C(C=C(C3=C(CC(CC)CCCC)C=C(C4=C(F)C(F)=C(C5=CC(CC(CC)CCCC)=C(C)S5)C6=NSN=C64)S3)S7)C7=C2CCC(CCCCCC)CCCC)S1\n"}, {"from": "gpt", "value": " 33.8\n"}]