preferred_name: androst-4-ene-3,17-dione + AH2 => testosterone + A
preferred_name_lc: androst-4-ene-3,17-dione + ah2 => testosterone + a
label: androst-4-ene-3,17-dione + AH2 => testosterone + A
label_lc: androst-4-ene-3,17-dione + ah2 => testosterone + a