[{"from": "human", "value": "Write solar cell fill factor of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC1=CC2=C(OCCCCCCCCCCCC)C(S3)=C(C(OCCCCCCCCCCCC)=C2S1)C=C3C4=CC(C(N(CC(CCCCCC)CCCCCCCC)C5=O)=O)=C(S4)C6=C5C=C(C)S6\n"}, {"from": "gpt", "value": " 0.62\n"}]