InChI=1/C16H21N3O3/c20-15(19-22)5-3-1-2-4-9-18-16(21)13-6-7-14-12(11-13)8-10-17-14/h6-8,10-11,17,22H,1-5,9H2,(H,18,21)(H,19,20)/f/h18-19H 6D5E8CBFE2D1CF87