InChI=1/C14H21N3O4/c1-2-3-6-16(7-8-18)10-12-5-4-11(14(15)19)9-13(12)17(20)21/h4-5,9,18H,2-3,6-8,10H2,1H3,(H2,15,19)/f/h15H2 6C8BC18E2095B201