Using CC(C)(Cc1ccc(Cl)cc1)OC(=O)CN, N=C(c1ccccc1)c1ccccc1 to produce CC(C)(Cc1ccc(Cl)cc1)OC(=O)CN=C(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.