preferred_name: (2R)-2,3-dihydroxy-3-methylbutanoate => 3-methyl-2-oxobutanoate + H2O
preferred_name_lc: (2r)-2,3-dihydroxy-3-methylbutanoate => 3-methyl-2-oxobutanoate + h2o
label: (2R)-2,3-dihydroxy-3-methylbutanoate => 3-methyl-2-oxobutanoate + H2O
label_lc: (2r)-2,3-dihydroxy-3-methylbutanoate => 3-methyl-2-oxobutanoate + h2o