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