Using COC(=O)C(=C1NCCCS1)[N+](=O)[O-], COC(=O)Cl to produce COC(=O)C(=C1SCCCN1C(=O)OC)[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.