label: nororientaline + S-adenosyl-L-homocysteine + H(+) => 6-O-methylnorlaudanosoline + S-adenosyl-L-methionine
label_lc: nororientaline + s-adenosyl-l-homocysteine + h(+) => 6-o-methylnorlaudanosoline + s-adenosyl-l-methionine