InChI=1S/C22H23ClO7/c1-4-5-6-7-13(29-2)17-12(24)8-10-15(21(17)27)20(26)16-11(19(10)25)9-14(30-3)18(23)22(16)28/h8-9,13,24,27-28H,4-7H2,1-3H3/t13-/m0/s1