Using COc1ccc2c(c1)C1(COCC(=O)N1)c1cc(Br)ccc1O2 to produce O=C1COC[C@@]2(N1)c1cc(O)ccc1Oc1ccc(Br)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.