InChI=1S/C25H27NO7S/c1-26(24-21(30)19(28)20(29)22(33-24)25(31)32)9-6-13(7-10-26)18-15-5-3-2-4-14(15)12-17(27)23-16(18)8-11-34-23/h2-5,8,11,19-22,24,28-30H,6-7,9-10,12H2,1H3/b18-13-