[{"from": "human", "value": "Write solar cell power conversion efficiency of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC(S1)=CC2=C1C(C3=CC=C(C[C@H](CCCC)CC)S3)=C(C=C(C4=CC=C(C(N(CC(CCCCCC)CCCCCCCC)C5=O)=C6C5=C(C7=CC=C(C)S7)N(CC(CCCCCC)CCCCCCCC)C6=O)S4)S8)C8=C2C9=CC=C(C[C@H](CCCC)CC)S9\n"}, {"from": "gpt", "value": " 4.23\n"}]