CC(=O)NCC([N+](=O)[O-])[N+](=O)[O-]    mol9219    0_1
CC(=O)NC[C-]([N+](=O)[O-])[N+](=O)[O-]    mol9219    -1_1
CC(=O)[N-]CC([N+](=O)[O-])[N+](=O)[O-]    mol9219    -1_2