CCOC(=O)c1n[nH]c(=O)[nH]c1=O    mol9736    0_1
CCOC(=O)c1n[nH]c(=O)[n-]c1=O    mol9736    -1_1
CCOC(=O)c1n[n-]c(=O)[nH]c1=O    mol9736    -1_2