InChI=1S/C21H36O7/c1-5-15(22)11-17-6-8-18(23)13(3)20(24)26-12(2)10-16-7-9-19(27-16)14(4)21(25)28-17/h12-19,22-23H,5-11H2,1-4H3/t12-,13+,14-,15+,16+,17-,18+,19-/m0/s1