for the following products
(1S,2R)-1-((2R,3R,4S)-3-Acetamido-4-acetoxy-6-(methoxycarbonyl)-3,4-dihydro-2H-pyran-2-yl)propane-1,2,3-triyl triacetate | Methyl 2,3-didehydro-4,7,8,9-tetera-O-acetyl-N-acetylneuraminate | N-Acetyl-4,7,8,9-tetra-O-acetyl-2,3-dehydro-2-deoxyneuraminic acid methyl ester and Methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-2,6-anhydro-3,5-dideoxy-D-glycero-D-galacto-non-2-enonate
