preferred_name: 4-hydroxy-L-threonine <=> glycolaldehyde + glycine
preferred_name_lc: 4-hydroxy-l-threonine <=> glycolaldehyde + glycine
label: 4-hydroxy-L-threonine <=> glycolaldehyde + glycine
label_lc: 4-hydroxy-l-threonine <=> glycolaldehyde + glycine