[{"from": "human", "value": "Given SMILES, write its solar cell average value of PCE as a p-type polymer and PC71BM or PCBM. ->  CC1=CC(C2=CC=C(CCCCCCCC)C=C2)=C(C3=CC=C(C4=CC=C(C)S4)S3)S1\n"}, {"from": "gpt", "value": " 1.73\n"}]