InChI=1S/C21H25ClO7/c1-2-28-13-6-3-11(4-7-13)17(24)14-9-12(5-8-15(14)22)21-20(27)19(26)18(25)16(10-23)29-21/h3-9,16-21,23-27H,2,10H2,1H3/t16-,17?,18-,19+,20-,21+/m1/s1