VSEPR for molecules with multiple central atoms

[Toby Harris - Discussion 2E]

If A in AXE of the VESPR model corresponds to the central atom of a molecule, how do we write the VSEPR notation for molecules with atoms that are larger and more complex? What constitutes a central atom in large molecules with more complex bonding?

[Erika Patel 3I]

Larger, more complex compounds may have multiple central atoms, in which case you would determine the VSEPR notation around each atom.

[Tala Hamdan 3B]

I think the best way to think about this is by dividing the large molecule into smaller constituent molecules and because of this, we see that many shapes can exist in the same molecule and this explains the existence of several different bond angles.