[{"from": "human", "value": "What is solar cell PCE of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=C2C(N=C(CCCCCCCC)S2)=C(C3=CC=C(C4=CC=C(C)C=C4C5(CCCCCC)CCCCCC)C5=C3)S1\n"}, {"from": "gpt", "value": " 2.64\n"}]