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