(6aR,6bS,7S,8aS,8bS,11aR,12bR)-7-hydroxy-8b-(2-hydroxyacetyl)-6a,8a-dimethyl-10-propyl-6a,6b,7,8,8a,8b,11a,12b-octahydro-1H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-4(2H)-one (Budesonide Impurity）

(6aR,6bS,7S,8aS,8bS,11aR,12bR)-7-hydroxy-8b-(2-hydroxyacetyl)-6a,8a-dimethyl-10-propyl-6a,6b,7,8,8a,8b,11a,12b-octahydro-1H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-4(2H)-one (Budesonide Impurity）