(L)-malic acid acetonide 1,3-dioxolane-4-acetic acid, 2,2-dimethyl-5-oxo-, (4S)- InChI=1/C7H10O5/c1-7(2)11-4(3-5(8)9)6(10)12-7/h4H,3H2,1-2H3,(H,8,9)/t4-/m0/s [(4S)-2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl]acetic acid acetonide