Using Brc1ccc2c(c1)Cc1cc(Br)ccc1-2, O=[Mn](=O)(=O)[O-] to produce O=C1C(Br)=CC=C2C1=Cc1cc(Br)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.