0  B7R0.6  O=C(O)CCC(=O)O DB00139 [0,0,0,0,0,0|4,0,0]=4
1  B8R0.23  NC(=O)C[C@H](N)C(=O)O DB00174 [0,1,0,0,0,0|3,0,0]=4
2  B5R0.5  CC(=O)C(=O)O DB00119 [0,0,0,0,2,0|2,0,0]=4