(3aR,15bS)-2-phenyl-11b,15b-dihydro-1H-anthra[1',9':3,4,5]benzo[6,7]cyclohepta[1,2-c]pyrrole-1,3,7(2H,3aH)-trione

spiro[2-benzofuran-3,9'-fluorene]-1-one

9-triptycyl phenyl ketone

1-(α-bromobenzyl)triptycene

triptycene