[{"from": "human", "value": "Given SMILES, write its solar cell fill factor at normal measurement conditions.. ->  CC(S1)=CC2=C1C3=C(C(OCC(CC)CCCC)=C(C4=C(C=C(C5=CC=C(/C(C(N6CC(CCCCCC)CCCCCCCC)=O)=C7C(C=CC(C)=C8)=C8N(CC(CCCCCC)CCCCCCCC)C/7=O)C6=C5)S4)S9)C9=C3OCC(CCCC)CC)S2\n"}, {"from": "gpt", "value": " 25.8\n"}]