Editing Molecule (section)

=== Structural formula ===
[[File:Atisane3.png|thumb|right|upright=1.8|[[Three-dimensional space|3D]] (left and center) and [[2D geometric model|2D]] (right) representations of the [[terpenoid]] molecule atisane]]
{{Main|Structural formula}}

For molecules with a complicated 3-dimensional structure, especially involving atoms bonded to four different substituents, a simple molecular formula or even semi-structural chemical formula may not be enough to completely specify the molecule. In this case, a graphical type of formula called a [[structural formula]] may be needed. Structural formulas may in turn be represented with a one-dimensional chemical name, but such [[chemical nomenclature]] requires many words and terms which are not part of chemical formulas.
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