InChI=1S/C21H25NO6/c1-25-16-8-5-14(13-18(16)27-3)11-12-22-19(23)10-7-15-6-9-17(26-2)21(28-4)20(15)24/h5-10,13,24H,11-12H2,1-4H3,(H,22,23)