Using CCOC(=O)C(Cc1cc(C(=O)c2ccccc2Cl)c(N)s1)C(=O)OCC to produce Nc1sc(CCC(=O)O)cc1C(=O)c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.