label: 3-hydroxy-4,5-dimethoxyphenethylamine + S-adenosyl-L-methionine => mescaline + S-adenosyl-L-homocysteine + H(+)
label_lc: 3-hydroxy-4,5-dimethoxyphenethylamine + s-adenosyl-l-methionine => mescaline + s-adenosyl-l-homocysteine + h(+)