Using COC(=O)CBr, Cn1c(C(F)(F)F)cc(=O)n(-c2cc(Oc3nccc(O)n3)c(Cl)cc2F)c1=O to produce COC(=O)COc1ccnc(Oc2cc(-n3c(=O)cc(C(F)(F)F)n(C)c3=O)c(F)cc2Cl)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.