InChI=1S/C20H20ClNO8/c1-22(2)13-7-5-6-10(18(28)20(7,30)19(29)17(27)16(13)26)15(25)12-9(23)4-3-8(21)11(12)14(6)24/h3-4,6-7,10,13-14,17,23-24,27,30H,5H2,1-2H3/t6?,7?,10?,13?,14?,17?,20-/m0/s1