dihydrochelirubine + S-adenosyl-L-homocysteine + H(+) => 10-hydroxydihydrosanguinarine + S-adenosyl-L-methionine
dihydrochelirubine + s-adenosyl-l-homocysteine + h(+) => 10-hydroxydihydrosanguinarine + s-adenosyl-l-methionine