label: 5-amino-6-(D-ribitylamino)uracil + L-tyrosine + S-adenosyl-L-methionine = 5-amino-5-(4-hydroxybenzyl)-6-(D-ribitylimino)-5,6-dihydrouracil + 2-iminoacetate + 5'-deoxyadenosine + L-methionine + H(+)
label_lc: 5-amino-6-(d-ribitylamino)uracil + l-tyrosine + s-adenosyl-l-methionine = 5-amino-5-(4-hydroxybenzyl)-6-(d-ribitylimino)-5,6-dihydrouracil + 2-iminoacetate + 5'-deoxyadenosine + l-methionine + h(+)