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