InChI=1S/C19H21NO6/c1-25-16-9-12(10-17(26-2)19(16)24)3-8-18(23)20-11-15(22)13-4-6-14(21)7-5-13/h3-10,15,21-22,24H,11H2,1-2H3,(H,20,23)