[{"from": "human", "value": "Given SMILES, write its band gap at room temperature and atmospheric pressure. ->  CC1=CC2=C(OCC(CCCC)CC)C3=C(C=C(C4=C5C(C(C(C=C(OCCCCCCCC)C(OCCCCCCCC)=C6)=C6C5=O)=O)=C(C)S4)S3)C(OCC(CC)CCCC)=C2S1\n"}, {"from": "gpt", "value": " 1.81\n"}]