Using NS(N)(=O)=O, C[C@@H](NC(=O)NCCCCC1CCSS1)C(=O)O to produce C[C@@H](NC(=O)NCCCCC1CCSS1)C(=O)NS(N)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.