Using O=C1CC(=O)C2C3CCC(O3)C12, CCc1cc(Br)ccc1[Pb+3] to produce CCc1cc(Br)ccc1C1C(=O)C2C3CCC(O3)C2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.