preferred_name: L-lysine + L-arginine = L-homoarginine + L-ornithine
preferred_name_lc: l-lysine + l-arginine = l-homoarginine + l-ornithine
label: L-lysine + L-arginine = L-homoarginine + L-ornithine
label_lc: l-lysine + l-arginine = l-homoarginine + l-ornithine