InChI=1S/C11H20N4O6/c1-7(15(4-9(13)17)6-11(20)21)2-14(3-8(12)16)5-10(18)19/h7H,2-6H2,1H3,(H2,12,16)(H2,13,17)(H,18,19)(H,20,21)