InChI=1S/C21H30O7S/c1-7-12(5)9-17(22)27-21-18-13(6)16(28-29(24,25)26)10-15(11(3)4)19(18)14(8-2)20(21)23/h8-9,11,15-16,18-19,21H,6-7,10H2,1-5H3,(H,24,25,26)/b12-9-,14-8-