0 B7R0.6 CC(C)CCC(=O)[O-] 4-Mythelpentanate [1,0,0,0,1,0|2,0,0]=4 1 B7R0.9 C[N+](C)(C)CC(=O)[O-] gut40 [0,0,0,0,2,0|1,0,0]=3