InChI=1S/C21H36O6/c1-6-12(2)17-19(4,15(24)7-8-22)16-13(3)9-21(27,11-23)10-14(16)18(25)20(17,5)26/h12-14,16-17,22-23,26-27H,6-11H2,1-5H3