label: kaempferide + S-adenosyl-L-methionine <=> 7,4'-O-dimethylkaempferol + S-adenosyl-L-homocysteine + H(+)
label_lc: kaempferide + s-adenosyl-l-methionine <=> 7,4'-o-dimethylkaempferol + s-adenosyl-l-homocysteine + h(+)