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