[{"from": "human", "value": "Given SMILES, write its solar cell power conversion efficiency as a p-type polymer and PC71BM or PCBM. ->  CC1=CC(SC(C(SC2=C3SC(C4=C(CCCCCCCCCCCCCC)C=C(C5=CC(CCCCCCCCCCCCCC)=C(C)S5)S4)=C2)=C3C(N6OCC(CCCCCCCCCC)CCCCCCCC)=O)=C7C6=O)=C7S1\n"}, {"from": "gpt", "value": " 4.65\n"}]