InChI=1S/C28H21ClO4/c29-25-13-18-2-1-17-4-8-22(27(32)14-17)21-9-7-20(30)15-19(21)6-3-16-5-10-26(31)23(11-16)24(12-18)28(25)33/h1-2,4-5,7-15,30-33H,3,6H2/b2-1-