0  B8R0.23  NC(=O)C[C@H](N)C(=O)O DB00174 [1,0,0,0,0,1|2,0,0]=4
1  B8R0.23  O=C(O)CC(O)C(=O)O DB12751 [1,0,0,0,0,1|1,0,0]=3