Using NCCO, CS(=O)(=O)OCCN(CCOS(C)(=O)=O)c1cc(C(=O)O)c([N+](=O)[O-])cc1[N+](=O)[O-] to produce CS(=O)(=O)OCCN(CCOS(C)(=O)=O)c1cc(C(=O)NCCO)c([N+](=O)[O-])cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.