preferred_name: L-erythrulose 1-phosphate => D-erythrulose 4-phosphate
preferred_name_lc: l-erythrulose 1-phosphate => d-erythrulose 4-phosphate
label: L-erythrulose 1-phosphate => D-erythrulose 4-phosphate
label_lc: l-erythrulose 1-phosphate => d-erythrulose 4-phosphate