demethylmacrocin + S-adenosyl-L-methionine = macrocin + S-adenosyl-L-homocysteine + H(+)
demethylmacrocin + s-adenosyl-l-methionine = macrocin + s-adenosyl-l-homocysteine + h(+)
"demethylmacrocin O-methyltransferase"
"demethylmacrocin o-methyltransferase"