InChI=1S/C21H32O7/c1-10(2)7-13(8-12(4)21-6-5-11(3)14(21)9-21)27-20-17(24)15(22)16(23)18(28-20)19(25)26/h7,12-18,20,22-24H,3,5-6,8-9H2,1-2,4H3,(H,25,26)