Using O=C(n1ccnc1)n1ccnc1, O=C(O)C1CCN(C(=O)Cc2coc3ccccc23)CC1 to produce CNC(=O)C1CCN(C(=O)Cc2coc3ccccc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.