(3R,6R)-6-hydroxy-8-azabicyclo[3.2.1]oct-3-yl rel-2-methylpropanoate 3alpha-Isobutyryloxy-7beta-hydroxynortropane InChI=1/C11H19NO3/c1-6(2)11(14)15-8-3-7-4-10(13)9(5-8)12-7/h6-10,12-13H,3-5H2,1-2H3/t7?,8-,9?,10-/m1/s Isobutyric acid 6-hydroxy-8-aza-bicyclo[3.2.1]oct-3-yl ester propanoic acid, 2-methyl-, (3R,6R)-6-hydroxy-8-azabicyclo[3.2.1]oct-3-yl ester