InChI=1S/C19H24N4O4/c1-12(2)10-15(24)22-19(27)16(17(25)13-6-4-3-5-7-13)23-18(26)14-11-20-8-9-21-14/h3-9,11-12,15-17,24-25H,10H2,1-2H3,(H,22,27)(H,23,26)/t15-,16-,17?/m0/s1