[{"from": "human", "value": "Given SMILES, write its solar cell fill factor at room temperature and atmospheric pressure. ->  CC1=CC2=C(C(OCC(CCCCCC)CCCC)=C(C=C(C3=C4C(C=C(C(OC)=O)C(C(OC)=O)=C4)=C(C)S3)S5)C5=C2OCC(CCCC)CCCCCC)S1\n"}, {"from": "gpt", "value": " 24\n"}]