[{"from": "human", "value": "Given SMILES, write its band gap at normal measurement conditions.. ->  CC1=C(C[C@@H](CCCCCCCC)CCCCCCCCCC)C=C(C2=CC(C3=NSN=C3C(C4=CC(CC(CCCCCCCC)CCCCCCCCCC)=C(C5=CC=C(C6=CC=C(C)S6)S5)S4)=C7)=C7C8=NSN=C82)S1\n"}, {"from": "gpt", "value": " 1.53\n"}]