Using CC(C)(C)OC(=O)NC(c1cccc(Cl)c1Cl)S(=O)(=O)c1ccccc1 to produce CC(C)(C)OC(=O)/N=C/c1cccc(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.