preferred_name: a chlorophyll + H2O = a chlorophyllide + phytol + H(+)
preferred_name_lc: a chlorophyll + h2o = a chlorophyllide + phytol + h(+)
label: a chlorophyll + H2O = a chlorophyllide + phytol + H(+)
label_lc: a chlorophyll + h2o = a chlorophyllide + phytol + h(+)