0  B4R0.1  NCC(=O)O CP27217 [0,2,0,0,0,0|0,0,2]=4
1  B4R0.1  NCC(N)=O CP00916 [0,2,0,0,0,0|1,0,1]=4
2  B4R0.1  NCC(N)=O CP26161 [0,2,0,0,0,0|1,0,1]=4
3  B4R0.1  [15NH2]CC(=O)O CP27404 [0,2,0,0,0,0|0,0,2]=4