C=CCC1(CC(C)C)C(=O)NC(=O)NC1=O    mol11615    0_1
C=CCC1(CC(C)C)C(=O)[N-]C(=O)NC1=O    mol11615    -1_1
C=CCC1(CC(C)C)C(=O)[N-]C(=O)[N-]C1=O    mol11615    -2_1