Using O=C1C=CC(=O)c2cc3ccccc3cc21, BrCc1c(C(Br)Br)ccc2ccccc12 to produce O=C1c2cc3ccccc3cc2C(=O)c2cc3c(ccc4ccccc43)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.