The chemical formula C2H2O2 doesn't correspond to a single, well-known compound. It could represent multiple isomers with different structures and properties.

Here are a few possibilities:

* Glycolaldehyde: This is the most common interpretation of C2H2O2. It's a simple sugar, with a structure of HOCH2CHO.

* Acetic acid: This is another possibility, with the structure CH3COOH. However, its formula is typically written as CH3COOH to highlight the functional group.

* Other possible isomers: While less common, there are other potential structures that can be made with the same number of atoms.

Therefore, to determine the correct name, more context is needed, such as the compound's properties, context in which it was found, or a structural diagram.