[{"from": "human", "value": "What is solar cell average value of power conversion efficiency of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=CC=C(C2=C(OCCCCCCCC)C(OCCCCCCCC)=C(C3=CC=C(C4=CC5=C(C6=CC=C(OCC(CCCC)CC)C(F)=C6)C7=C(C=C(C)O7)C(C8=CC(F)=C(OCC(CC)CCCC)C=C8)=C5S4)S3)C9=NSN=C92)S1\n"}, {"from": "gpt", "value": " 6.8\n"}]