There are several possible compounds formed by carbon and sulfur, and the specific formula depends on the ratio of the two elements. Here are some common examples:

* Carbon disulfide (CS₂): This is a highly flammable liquid used as a solvent and in the production of rayon and cellophane.

* Carbon monosulfide (CS): This is a gas that is unstable and quickly polymerizes.

* Carbon subsulfide (C₃S₂): This is a yellow liquid that is also unstable.

* Carbon disulfide polymers: These are long chain polymers with various structures and properties.

To determine the specific compound formula, you would need more information about the context, such as the chemical reaction involved or the desired properties of the compound.