2-[[2-[[(1-amino-3-phenylpropyl)-hydroxyphosphoryl]methyl]-3-phenylpropanoyl]amino]-3-phenylpropanoic acid
2-[[2-[[(1-amino-3-phenyl-propyl)-hydroxy-phosphoryl]methyl]-3-phenyl-propanoyl]amino]-3-phenyl-propanoic acid
2-[[2-[[(1-amino-3-phenylpropyl)-hydroxyphosphoryl]methyl]-1-oxo-3-phenylpropyl]amino]-3-phenylpropanoic acid
2-[[2-[[(1-amino-3-phenyl-propyl)-hydroxy-phosphoryl]methyl]-3-phenyl-propanoyl]amino]-3-phenyl-propionic acid