preferred_name: an 8-hydroxyflavone + S-adenosyl-L-methionine => an 8-methoxyflavone + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: an 8-hydroxyflavone + s-adenosyl-l-methionine => an 8-methoxyflavone + s-adenosyl-l-homocysteine + h(+)
label: an 8-hydroxyflavone + S-adenosyl-L-methionine => an 8-methoxyflavone + S-adenosyl-L-homocysteine + H(+)
label_lc: an 8-hydroxyflavone + s-adenosyl-l-methionine => an 8-methoxyflavone + s-adenosyl-l-homocysteine + h(+)