[{"from": "human", "value": "Write solar cell average value of PCE of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC(S1)=CC2=C1C(OCC(CCCCCCCC)CCCCCC)=C(C=C(C3=CC=C(C)C4=NSN=C43)S5)C5=C2OCC(CCCCCCCC)CCCCCC\n"}, {"from": "gpt", "value": " 1.71\n"}]