an (S)-cis-N-methyl-7,8,13,14-tetrahydroprotoberberine + S-adenosyl-L-homocysteine => an (S)-7,8,13,14-tetrahydroprotoberberine + S-adenosyl-L-methionine
an (s)-cis-n-methyl-7,8,13,14-tetrahydroprotoberberine + s-adenosyl-l-homocysteine => an (s)-7,8,13,14-tetrahydroprotoberberine + s-adenosyl-l-methionine