[{"from": "human", "value": "Given SMILES, write its solar cell FF as a p-type polymer and PC71BM or PCBM. ->  CC1=C(CCCCCC)C=C(C2=NN=C(C3=CC(CCCCCC)=C(C4=CC(C(CCCCCC)(CCCCCC)C5=C6SC(C)=C5)=C6S4)S3)N=N2)S1\n"}, {"from": "gpt", "value": " 0.59\n"}]