preferred_name: 2-dehydropantolactone + AH2 => (R)-pantolactone + A
preferred_name_lc: 2-dehydropantolactone + ah2 => (r)-pantolactone + a
label: 2-dehydropantolactone + AH2 => (R)-pantolactone + A
label_lc: 2-dehydropantolactone + ah2 => (r)-pantolactone + a