Using O=C(O)CCNC(=O)CN1CCc2ccc(N3CCNCC3)cc2C1=O, CCOC(=O)C[C@H](N)c1cccnc1 to produce O=C(O)C[C@H](NC(=O)CN1CCc2ccc(N3CCNCC3)cc2C1=O)c1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.