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