[{"from": "human", "value": "Write solar cell fill factor of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC(S1)=CC2=C1C(OCCCCCCCCCCCC)=C(C=C(/C=C/C)S3)C3=C2OCCCCCCCCCCCC\n"}, {"from": "gpt", "value": " 0.38\n"}]