preferred_name: N-amidino-L-methionine + L-ornithine => L-arginine + L-methionine
preferred_name_lc: n-amidino-l-methionine + l-ornithine => l-arginine + l-methionine
label: N-amidino-L-methionine + L-ornithine => L-arginine + L-methionine
label_lc: n-amidino-l-methionine + l-ornithine => l-arginine + l-methionine