preferred_name: trichloroethene + AH2 <=> (Z)-1,2-dichloroethene + chloride + A + H(+)
preferred_name_lc: trichloroethene + ah2 <=> (z)-1,2-dichloroethene + chloride + a + h(+)
label: trichloroethene + AH2 <=> (Z)-1,2-dichloroethene + chloride + A + H(+)
label_lc: trichloroethene + ah2 <=> (z)-1,2-dichloroethene + chloride + a + h(+)