label: [(3R)-hydroxybutanoate](n) + H2O => [(3R)-hydroxybutanoate](n-3) + (3R)-hydroxybutanoate trimer + H(+)
label_lc: [(3r)-hydroxybutanoate](n) + h2o => [(3r)-hydroxybutanoate](n-3) + (3r)-hydroxybutanoate trimer + h(+)