[{"from": "human", "value": "Given SMILES, write its band gap at room temperature and atmospheric pressure. ->  CC1=CC2=C(C3=CC=C(CC(CC)CCCC)[Se]3)C(SC(C4=CC=C(C5=C(OCC(CCCCCCC)(CCCCCCC)CO6)C6=C(C7=CC=C(C)C8=NSN=C78)S5)C9=NSN=C49)=C%10)=C%10C(C%11=CC=C(CC(CC)CCCC)[Se]%11)=C2S1\n"}, {"from": "gpt", "value": " 1.64\n"}]