preferred_name: 20-hydroxy-3-oxopregn-4-en-21-al => 21-hydroxyprogesterone
preferred_name_lc: 20-hydroxy-3-oxopregn-4-en-21-al => 21-hydroxyprogesterone
label: 20-hydroxy-3-oxopregn-4-en-21-al => 21-hydroxyprogesterone
label_lc: 20-hydroxy-3-oxopregn-4-en-21-al => 21-hydroxyprogesterone