InChI=1S/C19H30O8/c1-10(21)5-6-13-18(2,3)7-11(22)8-19(13,4)27-17-16(25)15(24)14(23)12(9-20)26-17/h5,11-12,14-17,20,22-25H,7-9H2,1-4H3