InChI=1S/C20H24N2O5/c1-15(23)21-17-3-7-19(8-4-17)26-13-11-25-12-14-27-20-9-5-18(6-10-20)22-16(2)24/h3-10H,11-14H2,1-2H3,(H,21,23)(H,22,24)