[{"from": "human", "value": "Write weight-averaged molecular weight of given SMILES at normal measurement conditions.. ->  CC1=CC=C(C2=CC=C(C(SC(C3=CC=C(C)C4=NSN=C43)=C5)=C5C6(CC(CC)CCCC)CC(CCCC)CC)C6=C2)S1\n"}, {"from": "gpt", "value": " 25.6\n"}]