Using CC(C)(CNC(=O)OCc1ccccc1)NC(=O)N1Cc2ccccc2Oc2ccc(Cl)cc21 to produce CC(C)(CN)NC(=O)N1Cc2ccccc2Oc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.