Using CC(C)(C)OC(=O)NCCN(Cc1ccc(Cl)cc1)C(=O)c1ccc(-c2ccncc2)cc1 to produce NCCN(Cc1ccc(Cl)cc1)C(=O)c1ccc(-c2ccncc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.