Using O=C([O-])[O-], OC1CCN(c2nccnc2OC2CCN(c3ccc4ccccc4n3)CC2)CC1 to produce COC1CCN(c2nccnc2OC2CCN(c3ccc4ccccc4n3)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.