Using CCOC(=O)CCNC(=O)Nc1ccc(C2CN(C)Cc3c(Cl)cc(Cl)cc32)cc1 to produce CN1Cc2c(Cl)cc(Cl)cc2C(c2ccc(NC(=O)NCCC(=O)O)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.