1H-[1,2,4]Triazolo[1,2-a]pyridazine-8-carboxylic acid, 5-[(2,3,4,6-O-tetraacetyl-.beta.-D-glucopyranosyl)oxy]- 2,3,5,8-tetrahydro-1,3-dioxo-2-phenyl-, phenylmethyl ester, cis- NSC687355