for the following products
(2b,3a,5a,16b,17b)-2-(4-Morpholinyl)-16-(1-pyrrolidinyl)androstane-3,17-diol | 2β-(4-morpholinyl)-16β-(1-pyrrolidinyl)-5α-androstane-3α,17β-diol | Rocuronium ep impurity g and 3,17-Dihydroxy-2-(4-morpholinyl)-16-(1-pyrroliny)-androstane
