InChI=1S/C18H21NO6/c1-13(18(20)24-9-3-4-10-25-19(21)22)14-5-6-16-12-17(23-2)8-7-15(16)11-14/h5-8,11-13H,3-4,9-10H2,1-2H3/t13-/m0/s1