[{"from": "human", "value": "Write solar cell fill factor of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC1=C(CCCCCC)C(CCCCCC)=C(C2=NN=C(C3=C(CCCCCC)C(CCCCCC)=C(C4=CC=C(C)S4)S3)S2)S1\n"}, {"from": "gpt", "value": " 0.5760000000000001\n"}]