PREGN-5-ENE-8,11,12,14,20-PENTOL,3-[(O-6- DEOXY-3-O-METHYL-?D-ALLOPYRANOSYL- (1F4)-O-2,6-DIDEOXY-3-O-METHYL-?DRIBO- HEXOPYRANOSYL-(1F4)-2,6-DIDEOXY-?DRIBO- HEXOPYRANOSYL)OXY]-,(3?11R,12?14?-