ethyl (methyl 4-O-benzyl-2,3-O-isopropylidene-6,7-dideoxy-α-D-manno-octo-6E-enopyranosid)uronate

ethyl (methyl 2,3-O-isopropylidene-6,7-dideoxy-4-phenylthionocarbonate-α-D-mannooctopyranosid)uronate