preferred_name: heme b + CO2 + 2 H2O => harderoheme III + H2O2 + H(+)
preferred_name_lc: heme b + co2 + 2 h2o => harderoheme iii + h2o2 + h(+)
label: heme b + CO2 + 2 H2O => harderoheme III + H2O2 + H(+)
label_lc: heme b + co2 + 2 h2o => harderoheme iii + h2o2 + h(+)