InChI=1S/C22H28O7/c1-10(9-29-11(2)23)12-15(24)13-14(18(27)16(12)25)22(5)8-6-7-21(3,4)20(22)19(28)17(13)26/h10,20,24-25,27H,6-9H2,1-5H3/t10-,20-,22+/m0/s1