preferred_name: a 3-oxo-Delta(5)-steroid = a 3-oxo-Delta(4)-steroid
preferred_name_lc: a 3-oxo-delta(5)-steroid = a 3-oxo-delta(4)-steroid
label: a 3-oxo-Delta(5)-steroid = a 3-oxo-Delta(4)-steroid
label_lc: a 3-oxo-delta(5)-steroid = a 3-oxo-delta(4)-steroid