[{"from": "human", "value": "What is solar cell average value of PCE of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=CC2=C(C(C3=CC=C(OCC(CCCC)CCCCCC)C(F)=C3)=C(C=C(C4=C(CC(CC)CCCC)C=C(C5=CC=C(C6=CC(CC(CCCC)CC)=C(C)S6)C7=NSN=C75)S4)S8)C8=C2C9=CC=C(OCC(CCCCCC)CCCC)C(F)=C9)S1\n"}, {"from": "gpt", "value": " 6.9\n"}]