CC(C)OC(=O)[C@@H]([N+](=O)[O-])S(=O)(=O)[O-]    mol37891    -1_1
CC(C)OC(=O)[C-]([N+](=O)[O-])S(=O)(=O)O    mol37891    -1_2
CC(C)OC(=O)[C-]([N+](=O)[O-])S(=O)(=O)[O-]    mol37891    -2_1