Using FC(F)(F)Oc1ccc(-c2ccc3c(Br)nc(C(F)(F)F)n3c2)cc1, C=CC(=O)OC to produce COC(=O)/C=C/c1nc(C(F)(F)F)n2cc(-c3ccc(OC(F)(F)F)cc3)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.