Using COC(=O)c1ccc(C=S(=O)=O)c(C=C[N+](=O)[O-])c1Cl to produce COC(=O)c1ccc(C=S(=O)=O)c(CC[N+](=O)[O-])c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.