[{"from": "human", "value": "Given SMILES, write its band gap at normal measurement conditions.. ->  CC1=CC2=C(C=C(C=C(C3=CC=C(C4=CC=C(C5=CC=C(C)S5)C6=NN(C(CCCCCCCC)CCCCCCCC)N=C64)S3)S7)C7=C2)S1\n"}, {"from": "gpt", "value": " 2.1\n"}]