(+/-)-(1,3/2,4)-1,2,3,4-tetra-O-acetyl-5-cyclohexene-1,2,3,4-tetrol

1(3),4(6),5,6(4)-tetra-O-acetyl-sn-myo-inositol

黏酸

乙酸酐

tetra-O-acetylmucic dialdehyde