Using O=C(C1=CCN(c2ncccn2)CC1)c1ccc(-c2ccccc2)cc1 to produce OC(C1=CCN(c2ncccn2)CC1)c1ccc(-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.