Using O=c1ccn2c3ccc(Br)cc3c3cc(O)cc1c32, CCCC(=O)CBr to produce CCCC(=O)COc1cc2c(=O)ccn3c4ccc(Br)cc4c(c1)c23, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.