preferred_name: androsta-1,4-diene-3,17-dione + AH2 => androst-4-ene-3,17-dione + A
preferred_name_lc: androsta-1,4-diene-3,17-dione + ah2 => androst-4-ene-3,17-dione + a
label: androsta-1,4-diene-3,17-dione + AH2 => androst-4-ene-3,17-dione + A
label_lc: androsta-1,4-diene-3,17-dione + ah2 => androst-4-ene-3,17-dione + a