InChI=1S/C34H18/c1-3-11-25-21(9-1)23-13-5-7-19-15-18-28-32-26-12-4-2-10-22(26)24-14-6-8-20-16-17-27(34(32)30(20)24)31(25)33(28)29(19)23/h1-18H