Using COc1cccc(CCNC(=O)N(C)[C@H](Cc2cc(Br)c(O)c(Br)c2)C(=O)O)c1 to produce COc1cccc(CCNC(=O)N[C@H](Cc2cc(Br)c(O)c(Br)c2)C(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.