[[[5-[2,4-dioxo-5-[(E)-3-[3-[2-[6-[5-(7-oxo-3-thia-6,8-diazabicyclo[3. 3.0]oct-2-yl)pentanoylamino]hexanoylamino]ethyldisulfanyl]propanoylami no]prop-1-enyl]pyrimidin-1-yl]-3-hydroxy-oxolan-2-yl]methoxy-hydroxy-p hosphoryl]oxy-hydroxy-phosphoryl]oxyphosphonic acid