Using CCOC(=O)[C@H](Cc1nc(-c2nnc(N3CCC(Oc4cc(F)ccc4Br)CC3)s2)no1)NC(=O)C(F)(F)F to produce N[C@@H](Cc1nc(-c2nnc(N3CCC(Oc4cc(F)ccc4Br)CC3)s2)no1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.