. . . . . . . "experimental"@en . . . . . . . . . . . . . . . . . . "{3-[(3-Hydroxy-2-Methyl-5-Phosphonooxymethyl-Pyridin-4-Ylmethyl)-Amino]-2-Methyl-Propyl}-Phosphonic Acid"@en . . . . . . . . . .