Using CC(C)(C)OC(=O)N(Cc1ccccc1)C1CN(C(c2ccccc2)c2ccccc2)C1 to produce CC(C)(C)OC(=O)N(Cc1ccccc1)C1CNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.