preferred_name: L-histidocholate + taurine => taurocholate + L-histidine
preferred_name_lc: l-histidocholate + taurine => taurocholate + l-histidine
label: L-histidocholate + taurine => taurocholate + L-histidine
label_lc: l-histidocholate + taurine => taurocholate + l-histidine