[{"from": "human", "value": "Given SMILES, write its solar cell solar cell maximum value of power conversion efficiency as a p-type polymer and PC71BM or PCBM. ->  CC1=CC(CCCCCCCCCCCC)=C(C2=CC(SC3=C4SC(C5=C(CCCCCCCCCCCC)C=C(C6=CC=C(C(N(CC(CCCC)CCCCCC)C7=O)=C8C7=C(C9=CC=C(C)S9)N(CC(CCCCCC)CCCC)C8=O)S6)S5)=C3)=C4S2)S1\n"}, {"from": "gpt", "value": " 2.93\n"}]