Using COc1ccc(CNOCC(=O)C(=O)OC(C)(C)C)cc1N1CCN(Cc2ccc3ccccc3n2)CC1 to produce COc1ccc(CNOC=C=O)cc1N1CCN(Cc2ccc3ccccc3n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.