label: 11 beta,21-dihydroxy-14 alpha,17 alpha-(2-butenylidenedioxy)pregn-4-ene-3,20-dione, delta-21-isonicotinic acid ester
label_lc: 11 beta,21-dihydroxy-14 alpha,17 alpha-(2-butenylidenedioxy)pregn-4-ene-3,20-dione, delta-21-isonicotinic acid ester