[{"from": "human", "value": "What is band gap of given SMILES at room temperature and atmospheric pressure? ->  CC1=CC2=C(C(SC(C3=C(CCCCCC)C=C(C4=CC=C(C5=CC(CCCCCC)=C(C)S5)C6=NSN=C64)S3)=C7)=C7[Si](CCCC)(CCCC)[Si]2(CCCC)CCCC)S1\n"}, {"from": "gpt", "value": " 1.8\n"}]