preferred_name: a 7-hydroxyisoflavone + S-adenosyl-L-methionine => a 7-methoxyisoflavone + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: a 7-hydroxyisoflavone + s-adenosyl-l-methionine => a 7-methoxyisoflavone + s-adenosyl-l-homocysteine + h(+)
label: a 7-hydroxyisoflavone + S-adenosyl-L-methionine => a 7-methoxyisoflavone + S-adenosyl-L-homocysteine + H(+)
label_lc: a 7-hydroxyisoflavone + s-adenosyl-l-methionine => a 7-methoxyisoflavone + s-adenosyl-l-homocysteine + h(+)