0 B6R0.2 OC(=O)CC(O)=O HMDB0000691 [2,0,0,0,0,0|1,0,1]=4 1 B10R0.23 CCCC(CC(C)O)C(O)=O HMDB0013900 [0,2,0,0,0,0|1,0,1]=4