[{"from": "human", "value": "Write solar cell maximum value of PCE of given SMILES as a p-type polymer and PC71BM or PCBM. ->  O=C1N(CC(CC)CCCC)C(C2=CC=C(C)S2)=C3C1=C(C4=CC=C(C5=CC([Si](CC(CC)CCCC)(CC(CCCC)CC)C6=C7SC(C)=C6)=C7S5)S4)N(CC(CCCC)CC)C3=O\n"}, {"from": "gpt", "value": " 2.1\n"}]