Using COC(=O)c1ccc(-c2cc(C3C(=O)C4CCC(C4)C3=O)c(C)s2)cc1 to produce Cc1sc(-c2ccc(C(=O)O)cc2)cc1C1C(=O)C2CCC(C2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.