Using CCOC(=O)C(Cc1ccc(N)nc1)c1c[nH]cn1, BrCc1ccc(-n2cncn2)cc1 to produce CCOC(=O)C(Cc1ccc(N)nc1)c1cn(Cc2ccc(-n3cncn3)cc2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.