Using Cc1c(C(=O)c2ccc(Cl)cc2)[nH]c(C(=O)O)c1CC(=O)O to produce Cc1c(CC(=O)O)c[nH]c1C(=O)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.