Using CCOC(=O)CN1C(=O)CO[C@H]2Cc3ccccc3[C@H]21 to produce O=C(O)CN1C(=O)CO[C@H]2Cc3ccccc3[C@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.