Using CC(=O)O, Brc1ccc2c(c1)ncc1nnc(-c3ccccc3)n12 to produce O=c1[nH]c2cc(Br)ccc2n2c(-c3ccccc3)nnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.