Using O=C(c1ccc(-n2ccnc2)cc1)C1CCN(Cc2ccncc2)CC1 to produce OC(c1ccc(-n2ccnc2)cc1)C1CCN(Cc2ccncc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.