InChI=1S/C7H19NO11P2/c9-4(1-8-3-20(13,14)15)6(11)7(12)5(10)2-19-21(16,17)18/h4-12H,1-3H2,(H2,13,14,15)(H2,16,17,18)/t4-,5-,6-,7-/m1/s1