InChI=1/C16H32N4O2/c1-3-5-7-13(15(17)21)19-9-11-20(12-10-19)14(16(18)22)8-6-4-2/h13-14H,3-12H2,1-2H3,(H2,17,21)(H2,18,22)/t13-,14+/f/h17-18H2 A0628A03ADA93E84