[{"from": "human", "value": "What is solar cell solar cell average value of power conversion efficiency of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC(S1)=CC2=C1C(CCCCCCCC)=C(C=C(C3=C4C(C=C(C(OCC(CCCC)CC)=O)S4)=C(C)S3)S5)C5=C2CCCCCCCC\n"}, {"from": "gpt", "value": " 0.74\n"}]