preferred_name: 16alpha-hydroxyprogesterone => 16,17-didehydroprogesterone + H2O
preferred_name_lc: 16alpha-hydroxyprogesterone => 16,17-didehydroprogesterone + h2o
label: 16alpha-hydroxyprogesterone => 16,17-didehydroprogesterone + H2O
label_lc: 16alpha-hydroxyprogesterone => 16,17-didehydroprogesterone + h2o