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