triple-layered <2.2><2.2>paracyclophane

benzene-1,2,4,5-tetrayltetramethanol

benzene-1,2,4,5-tetracarbaldehyde

2,6,10,14-tetrathia-8(1,4,2,5)-benzena-4,12(2,6)-dipyridina-spiro[7.7]pentadecaphane

2,4,5-tris(mercaptomethyl)benzyl hydrosulfide (en)1,2,4,5-Benzenetetramethanethiol (en)