Using Brc1ccc2nc(OC3CCNCC3)sc2c1, Fc1cnc(Cl)nc1 to produce Fc1cnc(N2CCC(Oc3nc4ccc(Br)cc4s3)CC2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.