InChI=1S/C20H20ClNO8/c1-22(2)20(30)10-5-7-13(18(28)19(10,29)11(24)6-12(20)25)17(27)15-9(23)4-3-8(21)14(15)16(7)26/h3-4,7,10,16,23,26,28-30H,5-6H2,1-2H3/t7?,10?,16?,19-,20?/m1/s1