preferred_name: taurocholate + L-arginine => L-arginocholate + taurine
preferred_name_lc: taurocholate + l-arginine => l-arginocholate + taurine
label: taurocholate + L-arginine => L-arginocholate + taurine
label_lc: taurocholate + l-arginine => l-arginocholate + taurine