3-(5-{2-[5-(2-[1,3]dioxolan-2-yl-2-methyl-propyl)-isoxazol-3-yl]-2-methyl-propyl}-isoxazol-3-yl)-3-methyl-butyric acid methyl ester

3-methyl-3-{5-[2-methyl-2-(2-methyl-[1,3]dioxolan-2-yl)-propyl]-isoxazol-3-yl}-butyric acid

3-[5-(2,2-dimethyl-3-oxo-butyl)-isoxazol-3-yl]-3-methyl-butyric acid