CCOC(=O)NN(C(=O)OCC)C([N+](=O)[O-])[N+](=O)[O-]    mol35864    0_1
CCOC(=O)NN(C(=O)OCC)[C-]([N+](=O)[O-])[N+](=O)[O-]    mol35864    -1_1
CCOC(=O)[N-]N(C(=O)OCC)C([N+](=O)[O-])[N+](=O)[O-]    mol35864    -1_2