CCOC(=O)[N-]c1nnn(C)c1CNC(=O)OCC    mol11423    -1_1
CCOC(=O)[N-]Cc1c(NC(=O)OCC)nnn1C    mol11423    -1_2
CCOC(=O)[N-]Cc1c([N-]C(=O)OCC)nnn1C    mol11423    -2_1