InChI=1S/C21H32O7/c1-11(2)6-5-8-20(4,21-9-7-12(3)13(21)10-21)28-19-16(24)14(22)15(23)17(27-19)18(25)26/h6,13-17,19,22-24H,3,5,7-10H2,1-2,4H3,(H,25,26)