[{"from": "human", "value": "Write solar cell fill factor of given SMILES at room temperature and atmospheric pressure. ->  O=C(C1=C2C(C3=C(C=C(C4=CC5=C(C(SC(C)=C6)=C6S5)S4)S7)C7=C28)=C(C(N(CC(CCCCCCCCCC)CCCCCCCCCCCC)C3=O)=O)C9=C1C=C(C)S9)N(CC(CCCCCCCCCCCC)CCCCCCCCCC)C8=O\n"}, {"from": "gpt", "value": " 68.5\n"}]