The starting shape
A compact molecule with a complicated framework
Ibogaine is an alkaloid: a naturally occurring compound that contains nitrogen. In chemical shorthand, its molecular formula is C20H26N2O. That formula is useful, but it is only an ingredient list. It does not show how atoms are joined, folded, or positioned in space.
The more meaningful picture is structural. Ibogaine belongs to the iboga alkaloid family and has an interconnected, multi-ring scaffold. Rather than behaving like a loose chain of atoms, its rings hold the molecule in a particular three-dimensional arrangement. That arrangement is one reason chemistry and pharmacology discussions often use drawings rather than a formula alone.
For a broader foundation before getting deeper into the molecule, the plain-language ibogaine overview places structural questions alongside metabolism, uncertainty, and safety context.