0  B6R0.2  OC(=O)CC(O)=O HMDB0000691 [1,0,0,0,0,0|2,0,1]=4
1  B6R0.3  CC[C@H](N)C(O)=O HMDB0000452 [0,0,0,0,1,0|1,0,0]=2
2  B6R0.3  N[C@@H](CS)C(O)=O HMDB0000574 [0,0,0,0,1,0|2,0,0]=3
3  B7R0.4  NCCOCC([O-])=O HMDB0060587 [1,1,0,0,0,0|1,0,1]=4