Oxazole
                            Order
                            81201-81-2
                            
                                2H-Naphth[2',1':4,5]indeno[1,2-d]oxazole,5'H-pregna-1,4-dieno[17,16-d]oxazole-3,20-dione deriv.
                            
                        
                        
                        
                        
                        
                        
                            Order
                            14484-47-0
                            
                                11b,21-Dihydroxy-2'-methyl-5'bH-pregna-1,4-dieno[17,16-d]oxazole-3,20-dione 21-acetate
                            
                        
                        
                        
                        
                            Order
                            53908-05-7
                            
                                Spiro[17H-cyclopenta[a]phenanthrene-17,5'(2'H)-oxazole],spiro[estrane-17,5'(2'H)-oxazole] deriv.