InChI=1S/C15H20N2O11/c18-5-3-8(17-2-1-7(19)16-15(17)25)27-6(5)4-26-14-11(22)9(20)10(21)12(28-14)13(23)24/h1-2,5-6,8-12,14,18,20-22H,3-4H2,(H,23,24)(H,16,19,25)