InChI=1S/C19H17ClO8/c1-18(27)6-4-7-15(24)10(22)5-11(23)19(7,28)17(26)12(6)16(25)13-9(21)3-2-8(20)14(13)18/h2-3,6-7,10,12,21-22,27-28H,4-5H2,1H3/t6?,7?,10?,12?,18-,19+/m0/s1