InChI=1/C19H26N2O4/c1-25-17-10-6-5-9-15(17)21-18(22)13-16(19(23)24)20-12-11-14-7-3-2-4-8-14/h5-7,9-10,16,20H,2-4,8,11-13H2,1H3,(H,21,22)(H,23,24)/t16-/m1/s1/f/h20-21H 802EA61B21138405