Using COCCBr, Nc1nc(Nc2ccccc2)nc(-c2noc(-c3ccc(OCC(F)(F)F)nc3)n2)n1 to produce COCCN(c1ccccc1)c1nc(N)nc(-c2noc(-c3ccc(OCC(F)(F)F)nc3)n2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.