Using O=C(O)c1cccc2c(=O)c3ccccc3[nH]c12, Nc1ccc(OCCCBr)cc1 to produce O=C(Nc1ccc(OCCCBr)cc1)c1cccc2c(=O)c3ccccc3[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.