label: 4',7,8-trihydroxyflavone + S-adenosyl-L-methionine = 4',8-dihydroxy-7-methoxyflavone + S-adenosyl-L-homocysteine
label_lc: 4',7,8-trihydroxyflavone + s-adenosyl-l-methionine = 4',8-dihydroxy-7-methoxyflavone + s-adenosyl-l-homocysteine