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