[{"from": "human", "value": "Write solar cell fill factor of given SMILES at room temperature and atmospheric pressure. ->  CC1=CC(CCCCCCCCCC)=C(C2=NC(SC(C3=C(CCCCCCCCCC)C=C(C4=CC(CC(CCCCCCCCCC)CCCCCCCC)=C(C5=NC(SC(C6=C(CC(CCCCCCCC)CCCCCCCCCC)C=C(C)S6)=N7)=C7S5)S4)S3)=N8)=C8S2)S1\n"}, {"from": "gpt", "value": " 35.0\n"}]