preferred_name: hexano-6-lactone + H2O <=> 6-hydroxyhexanoate + H(+)
preferred_name_lc: hexano-6-lactone + h2o <=> 6-hydroxyhexanoate + h(+)
label: hexano-6-lactone + H2O <=> 6-hydroxyhexanoate + H(+)
label_lc: hexano-6-lactone + h2o <=> 6-hydroxyhexanoate + h(+)