preferred_name: L-methionine => 2-aminobut-2-enoate + methanethiol
preferred_name_lc: l-methionine => 2-aminobut-2-enoate + methanethiol
label: L-methionine => 2-aminobut-2-enoate + methanethiol
label_lc: l-methionine => 2-aminobut-2-enoate + methanethiol