InChI=1/C21H31N3O4/c25-20(23-21(26)22-14-17-6-2-1-3-7-17)10-11-24(15-18-8-4-12-27-18)16-19-9-5-13-28-19/h1-3,6-7,18-19H,4-5,8-16H2,(H2,22,23,25,26)/t18-,19-/m1/s1/f/h22-23H B6D2A94F183BA238