128534-58-7 3-Hydroxy-N-(2-hydroxy-1-oxo-2-(tetrahydro-2-hydroxy-6-methyl-5-(2-methylbutyl)-2H-pyran-2-yl)propyl)leucylhexahydro-3-pyridazinecarbonyl-N-hydroxyalanyl-N-methylphenylalanylhexahydro-3-pyridazinecarbonylserine rho-lactone Serine, 3-hydroxy-N-(2-hydroxy-1-oxo-2-(tetrahydro-2-hydroxy-6-methyl-5-(2-methylbutyl)-2H-pyran-2-yl)propyl)leucylhexahydro-3-pyridazinecarbonyl-N-hydroxyalanyl-N-methylphenylalanylhexahydro-3-pyridazinecarbonyl-, rho-lactone Variapeptin