beta-D-ribo-Hexopyranoside, (3beta,5beta,12beta,14beta,17beta)-12,14-dihydroxy-17-(4-pyridazinyl)androstan-3-yl O-2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1-4)-O-2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1-4)-2,6-dideoxy-