label: 4-methylajmaline + S-adenosyl-L-homocysteine + H(+) => 4-methylnorajmaline + S-adenosyl-L-methionine
label_lc: 4-methylajmaline + s-adenosyl-l-homocysteine + h(+) => 4-methylnorajmaline + s-adenosyl-l-methionine