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