Using COc1ccc(C2=C(C(=O)[O-])N3C(=O)[C@H]([C@@H](C)O)[C@H]3C2)cc1, Cc1oc(=O)oc1CBr to produce COc1ccc(C2=C(C(=O)OCc3oc(=O)oc3C)N3C(=O)[C@H]([C@@H](C)O)[C@H]3C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.