label: N-deacetylisoipecoside + S-adenosyl-L-methionine => 6-O-methyl-N-deacetylisoipecoside + S-adenosyl-L-homocysteine + H(+)
label_lc: n-deacetylisoipecoside + s-adenosyl-l-methionine => 6-o-methyl-n-deacetylisoipecoside + s-adenosyl-l-homocysteine + h(+)