(allyl 4-O-tert-butyldimethylsilyl-7,8-O-cyclohexylidene-3-deoxy-α-manno-oct-2-ulopyranosid)ono-1,5-lactone

methyl (allyl 4-O-tert-butyldimethylsilyl-7,8-O-cyclohexylidene-3-deoxy-α-D-manno-oct-2-ulopyranosid)onate