InChI=1S/C53H102O16P2/c1-4-7-10-13-16-17-18-19-20-21-22-23-24-25-26-27-28-29-32-35-38-41-53(58)69-50(45-63-51(56)39-36-33-30-14-11-8-5-2)47-67-71(61,62)65-44-48(55)43-64-70(59,60)66-46-49(42-54)68-52(57)40-37-34-31-15-12-9-6-3/h19-20,48-50,54-55H,4-18,21-47H2,1-3H3,(H,59,60)(H,61,62)/b20-19-/t48-,49+,50+/m0/s1