[{"from": "human", "value": "Given SMILES, write its number-averaged molecular weight at normal measurement conditions.. ->  CC1=CC2=C(C(C=C(N(C(CCCCCCCC)CCCCCCCC)C3=C4C=C5C(C(SC(C6=CC=C(C)C7=C6N=C(C8=CC=CC=C8)C(C9=CC=CC=C9)=N7)=C%10)=C%10C5(CCCCCCCC)CCCCCCCC)=C3)C4=C%11)=C%11C2(CCCCCCCC)CCCCCCCC)S1\n"}, {"from": "gpt", "value": " 5.6\n"}]