InChI=1S/C15H20N2O12/c18-3-4-6(20)10(12(27-4)17-2-1-5(19)16-15(17)26)28-14-9(23)7(21)8(22)11(29-14)13(24)25/h1-2,4,6-12,14,18,20-23H,3H2,(H,24,25)(H,16,19,26)