Keywords: Tetracyclo(2.2.1.02,6.03,5)heptane numbering.svg Structure of tetracyclo2 2 1 02 6 03 5heptane “ intentionally wrong nomenclature Own 2014-03-24 Emeldir <span class signature-talk >talk</span> File Tetracyclo 3 2 0 02 7 04 6 heptane numbering svg PD-chem Chemical structures to explain nomenclature |