6-[4-amino-4-hydroxy-2-oxo-3,4-dihydropyrimidin-1(2H)-yl]-3-[3-amino-5-(N-methylguanidino)pentanoylamino]-3,6-dihydro-2H-pyran-2-carboxylic acid
6-[4-amino-4-hydroxy-2-oxo-3,4-dihydropyrimidin-1(2h)-yl]-3-[3-amino-5-(n-methylguanidino)pentanoylamino]-3,6-dihydro-2h-pyran-2-carboxylic acid