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