[{"from": "human", "value": "What is solar cell solar cell maximum value of power conversion efficiency of given SMILES as a p-type polymer and PC71BM or PCBM? ->  O=C1C(C(C(N2CC(CCCCCCCC)CCCCCCCCCC)=O)=C(C3=CC4=C(C=C(C5=CC=C(C)S5)S4)S3)N1CC(CCCCCCCCCC)CCCCCCCC)=C2C6=CC7=C(C=C(C)S7)S6\n"}, {"from": "gpt", "value": " 5.4\n"}]