preferred_name: emodin + S-adenosyl-L-methionine = questin + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: emodin + s-adenosyl-l-methionine = questin + s-adenosyl-l-homocysteine + h(+)
label: emodin + S-adenosyl-L-methionine = questin + S-adenosyl-L-homocysteine + H(+)
label_lc: emodin + s-adenosyl-l-methionine = questin + s-adenosyl-l-homocysteine + h(+)