preferred_name: glycyl-L-histidine + H2O <=> L-histidine + glycine
preferred_name_lc: glycyl-l-histidine + h2o <=> l-histidine + glycine
label: glycyl-L-histidine + H2O <=> L-histidine + glycine
label_lc: glycyl-l-histidine + h2o <=> l-histidine + glycine