. . . . . . . . . . . . . . . . . . . . . . . "experimental"@en . . . . . . . . . "4-(2-Amino-Ethoxy)-2-[(3-Hydroxy-2-Methyl-5-Phosphonooxymethyl-Pyridin-4-Ylmethyl)-Amino]-but-3-Enoic Acid"@en . . .