Using Oc1cnc(-c2nn(Cc3ccccc3F)c3ccccc23)nc1Nc1ccncc1, OCC(O)CBr to produce OCC(O)COc1cnc(-c2nn(Cc3ccccc3F)c3ccccc23)nc1Nc1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.