Using CC(C)(C)OC(=O)CN=C(c1ccccc1)c1ccccc1, BrCc1ccccc1 to produce CC(C)(C)OC(=O)C(Cc1ccccc1)N=C(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.