preferred_name: (2R)-2-phosphoglycerate <=> (2R)-3-phosphoglycerate
preferred_name_lc: (2r)-2-phosphoglycerate <=> (2r)-3-phosphoglycerate
label: (2R)-2-phosphoglycerate <=> (2R)-3-phosphoglycerate
label_lc: (2r)-2-phosphoglycerate <=> (2r)-3-phosphoglycerate