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