Admanatane Yes Cubane Yes Prismane Yes Twistane Yes Bicyclo[1.1.1]pentane Yes Bicyclo[2.1.1]hexane Yes Bicyclo[2.2.1]heptane Yes Bicyclo[3.1.1]heptane Yes Bicyclo[2.2.2]octane Yes Bicyclo[3.2.1]octane Yes Bicyclo[4.1.1]octane Yes Bicyclo[4.1.1]octane Yes Bicyclo[3.2.2]nonane Yes Bicyclo[3.3.1]nonane Yes Bicyclo[4.2.1]nonane Yes Bicyclo[4.2.1]nonane Yes Bicyclo[4.2.1]nonane Yes Bicyclo[5.1.1]nonane Yes Bicyclo[3.3.2]decane Yes Bicyclo[4.2.2]decane Yes Bicyclo[4.2.2]decane Yes Bicyclo[4.2.2]decane Yes Bicyclo[4.3.1]decane Yes Bicyclo[4.3.1]decane Yes Bicyclo[4.3.1]decane Yes Bicyclo[4.3.1]decane Yes Bicyclo[5.2.1]decane Yes Bicyclo[3.3.3]undecane Yes Bicyclo[4.3.2]undecane Yes Bicyclo[4.3.2]undecane Yes Bicyclo[4.3.2]undecane Yes Bicyclo[4.3.2]undecane Yes Bicyclo[4.4.1]undecane Yes Bicyclo[4.4.1]undecane Yes Bicyclo[4.4.1]undecane Yes Bicyclo[5.3.1]undecane Yes Bicyclo[4.4.2]dodecane Yes Bicyclo[4.4.2]dodecane Yes Bicyclo[4.4.2]dodecane Yes Bicyclo[5.3.2]dodecane Yes Bicyclo[5.4.1]dodecane Yes Bicyclo[5.3.3]tridecane Yes Bicyclo[5.4.2]tridecane Yes Bicyclo[5.5.1]tridecane Yes 12-Crown-4 Yes 13-Crown-4 Yes 14-Crown-4 Yes 15-Crown-5 Yes 16-Crown-5 Yes 17-Crown-5 Yes 18-Crown-6 Yes 20-Crown-6 Yes 21-Crown-7 Yes 24-Crown-8 Yes 27-Crown-9 Yes 30-Crown-10 Yes [Ring9] Yes [Ring10] Yes [Ring11] Yes [Ring12] Yes [Ring13] Yes [Ring14] Yes [Ring15] Yes [Ring16] Yes [Ring17] Yes [Ring18] Yes [Ring19] Yes [Ring20] Yes