What is the difference between the molecular, condensed and structural formulas?

Question

If possible could you use Propionic Acid as an example

Answer 1

C3H6O2 molecular

CH3CH2COOH condensed formula

I am not able to draw here the structural formula but you have to present all bonds and atoms in space.

   H       H

      \     /

H - C -C - C =O

     /      \         \

   H      H       OH

I tried several times to fit them correctly but it changes by itself:)) anyhow bonds of H shoild be connected to C