preferred_name: a (2R)-2-hydroxycarboxylate + A <=> a 2-oxocarboxylate + AH2
preferred_name_lc: a (2r)-2-hydroxycarboxylate + a <=> a 2-oxocarboxylate + ah2
label: a (2R)-2-hydroxycarboxylate + A <=> a 2-oxocarboxylate + AH2
label_lc: a (2r)-2-hydroxycarboxylate + a <=> a 2-oxocarboxylate + ah2