InChI=1S/C21H32O7/c1-11(2)5-4-6-13(21-8-7-12(3)14(21)9-21)10-27-20-17(24)15(22)16(23)18(28-20)19(25)26/h5,13-18,20,22-24H,3-4,6-10H2,1-2H3,(H,25,26)