Using COC(=O)c1ccc(COc2ccc(-c3nocc3NC(=O)OC(C)(C)C)cc2)cc1 to produce COC(=O)c1ccc(COc2ccc(-c3nocc3N)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.