InChI=1S/C20H29NO6/c1-5-14-10-12(2)20(4,27-13(3)22)19(24)25-11-15-6-8-21-9-7-16(17(15)21)26-18(14)23/h6,12,14,16-17H,5,7-11H2,1-4H3