tokens: For comparison , other RBA in this system were : 19-noraldosterone , 20 % ; 18-deoxyaldosterone , 5.8 % ; 18-deoxy-19-noraldosterone , 4.7 % ; 18 , 21-anhydroaldosterone , 0.37 % ; 17-isoaldosterone , 7.6 % and apoaldosterone , 4.3 %