InChI=1S/C18H28O9/c1-24-15-7-11(3-2-6-19)4-5-14(15)27-12(8-20)9-25-18-17(23)16(22)13(21)10-26-18/h4-5,7,12-13,16-23H,2-3,6,8-10H2,1H3