preferred_name: L-canaline + L-arginine + H(+) => L-canavanine + L-ornithine
preferred_name_lc: l-canaline + l-arginine + h(+) => l-canavanine + l-ornithine
label: L-canaline + L-arginine + H(+) => L-canavanine + L-ornithine
label_lc: l-canaline + l-arginine + h(+) => l-canavanine + l-ornithine