InChI=1S/C12H26O7P2/c1-4-11(2)7-5-6-8-12(3)9-10-18-21(16,17)19-20(13,14)15/h7,12H,4-6,8-10H2,1-3H3,(H,16,17)(H2,13,14,15)/b11-7+