[{"from": "human", "value": "Given SMILES, write its solar cell maximum value of power conversion efficiency as a p-type polymer and PC71BM or PCBM. ->  CC1=C(F)C=C(C2=CC(F)=C(C3=CC=C(C4=C(OCCCCCCCC)C(OCCCCCCCC)=C(C5=CC=C(C)S5)C6=NSN=C64)S3)C=C2N7CC(CCCCCC)CCCCCCCC)C7=C1\n"}, {"from": "gpt", "value": " 7.39\n"}]