InChI=1S/C20H28O7S/c1-17(2)12-5-6-20-8-7-18(3,10-20)16(23)13(27-28(24,25)26)14(20)19(12,4)9-11(21)15(17)22/h7-8,12-15,22H,5-6,9-10H2,1-4H3,(H,24,25,26)