InChI=1/C19H19NO8/c1-8-5-12(21)11(7-20-26)17(23)15(8)19(25)28-13-6-9(2)14(18(24)27-4)16(22)10(13)3/h5-7,21-23,26H,1-4H3/b20-7+ E1199ED3075C3750