[2.2.0]Metacyclophane

Tetracyclo[14.3.1.12,6.19,13]docosa-1(20),2,4,6(22),9,11,13(21),16,18-nonaene

Tetracyclo[14.3.1.14,8.19,13]docosane-1(20),4(22),5,7,9,11,13(21),16,18-nonaene