InChI=1/C20H28N2O3/c1-2-15-8-10-17(11-9-15)22-19(23)14-18(20(24)25)21-13-12-16-6-4-3-5-7-16/h6,8-11,18,21H,2-5,7,12-14H2,1H3,(H,22,23)(H,24,25)/t18-/m1/s1/f/h21-22H F1CDCC3DAEC869ED