54763-91-6 Pentazocine glucuronide beta-D-Glucopyranosiduronic acid, 1,2,3,4,5,6-hexahydro-6,11-dimethyl-3-(3-methyl-2-butenyl)-2,6-methano-3-benzazocin-8-yl, (2alpha,6alpha,11S*)-