preferred_name: atrazine + H2O <=> hydroxyatrazine + chloride + H(+)
preferred_name_lc: atrazine + h2o <=> hydroxyatrazine + chloride + h(+)
label: atrazine + H2O <=> hydroxyatrazine + chloride + H(+)
label_lc: atrazine + h2o <=> hydroxyatrazine + chloride + h(+)