preferred_name: 9,11alpha-epoxypregn-4-ene-3,20-dione + A + H2O => pregna-4,9(11)-diene-3,20-dione + AH2 + O2
preferred_name_lc: 9,11alpha-epoxypregn-4-ene-3,20-dione + a + h2o => pregna-4,9(11)-diene-3,20-dione + ah2 + o2
label: 9,11alpha-epoxypregn-4-ene-3,20-dione + A + H2O => pregna-4,9(11)-diene-3,20-dione + AH2 + O2
label_lc: 9,11alpha-epoxypregn-4-ene-3,20-dione + a + h2o => pregna-4,9(11)-diene-3,20-dione + ah2 + o2