[{"from": "human", "value": "What is solar cell maximum value of PCE of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=CC=C(C2=C(C(OCC(CCCCCC)CCCC)=O)C=C(C3=CC(C(OCC(CCCC)CCCCCC)=O)=C(C4=CC=C(C)S4)S3)S2)S1\n"}, {"from": "gpt", "value": " 7.2\n"}]