Using CC(C)(C)OC(=O)NC1=NC(c2cc(NC(=O)c3ccc(Br)cn3)ccc2F)(C(F)F)COC1 to produce NC1=NC(c2cc(NC(=O)c3ccc(Br)cn3)ccc2F)(C(F)F)COC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.