InChI=1S/C20H20ClNO9/c21-11-5-3-7-13(10(11)8-23)22-12-6-2-1-4-9(12)19(29)31-20-16(26)14(24)15(25)17(30-20)18(27)28/h1-7,14-17,20,22-26H,8H2,(H,27,28)/t14-,15-,16+,17-,20-/m0/s1