[{"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=CC=C(C(N(CC(CCCCCC)CCCCCCCC)C2=O)=C(C2=C(C(S3)=CC=C3C(S4)=CC(C4=C5C6=CC(C=C(CC(CCCC)CC)C=C7)=C7S6)=C(C8=CC(C=C(CC(CC)CCCC)C=C9)=C9S8)C%10=C5C=C(C)S%10)N%11CC(CCCCCCCC)CCCCCC)C%11=O)S1\n"}, {"from": "gpt", "value": " 2.6\n"}]