6-(4-Amino-2-oxo-3,4-dihydro-2H-pyrimidin-1-yl)-4,5-dihydroxy-3-[3-hydroxy-2-(2-methylamino-acetylamino)-propionylamino]-tetrahydro-pyran-2-carboxylic acid amide AIDS-130416 AIDS130416 Asteromycin Gougerotin NSC528943