Draw it in 2D the way you would on paper — no name needed.
⚛
Pick a molecule to begin. Search above — try butane.
⚠2D coordinates only. PubChem has no computed 3D conformer for this compound, so the
structure is flat — bond angles and torsions here are drawing artefacts, not real geometry.
⚙3D geometry generated here. PubChem has no computed conformer for this structure, so
this one was built in your browser — it is one plausible low-energy shape, not a published
or measured structure. Connectivity and stereochemistry are exact; individual torsions are not.
⚠
Choose a bond, then look straight down it.
⚠
180°
——
Idealised torsional/steric increments, not a computed force field —
the shape and the ordering are what matter.