preferred_name: (S)-4-hydroxy-2-oxopentanoate <=> (2Z)-2-hydroxypenta-2,4-dienoate + H2O
preferred_name_lc: (s)-4-hydroxy-2-oxopentanoate <=> (2z)-2-hydroxypenta-2,4-dienoate + h2o
label: (S)-4-hydroxy-2-oxopentanoate <=> (2Z)-2-hydroxypenta-2,4-dienoate + H2O
label_lc: (s)-4-hydroxy-2-oxopentanoate <=> (2z)-2-hydroxypenta-2,4-dienoate + h2o