InChI=1S/C11H18N2O7/c1-4(15)13-8-5(12)2-7(11(18)19)20-10(8)9(17)6(16)3-14/h2,5-6,8-10,14,16-17H,3,12H2,1H3,(H,13,15)(H,18,19)/t5-,6+,8+,9+,10+/m0/s1