InChI=1S/C18H21NO6/c1-25-17-8-12(4-7-14(17)21)15(22)9-18(24)19-10-16(23)11-2-5-13(20)6-3-11/h2-8,15-16,20-23H,9-10H2,1H3,(H,19,24)