preferred_name: O-acetyl-L-homoserine + methanethiol = L-methionine + acetate + H(+)
preferred_name_lc: o-acetyl-l-homoserine + methanethiol = l-methionine + acetate + h(+)
label: O-acetyl-L-homoserine + methanethiol = L-methionine + acetate + H(+)
label_lc: o-acetyl-l-homoserine + methanethiol = l-methionine + acetate + h(+)