Using C1COCCO1, Cc1ccc(C(=O)NC2CC2)cc1-n1cnc(C(=O)c2cccc(Br)c2)c1N to produce Cc1ccc(C(=O)NC2CC2)cc1-n1cnc(C(=O)c2cccc(-c3cnccn3)c2)c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.