preferred_name: all-trans-retinol + AH2 => all-trans-7,8-dihydroretinol + A
preferred_name_lc: all-trans-retinol + ah2 => all-trans-7,8-dihydroretinol + a
label: all-trans-retinol + AH2 => all-trans-7,8-dihydroretinol + A
label_lc: all-trans-retinol + ah2 => all-trans-7,8-dihydroretinol + a