COC(=O)N=c1c[n+](C(C)C)[n-]o1    mol36604    0_1
COC(=O)N=c1c[n+]([C-](C)C)[nH]o1    mol36604    0_2
COC(=O)N=c1c[n+](C(C)C)[nH]o1    mol36604    1_1