There are actually several possible compounds between carbon and sulfur, as they can form different ratios. Here are a few common ones:

* Carbon disulfide (CS₂): This is a colorless liquid with a sweet odor. It's highly flammable and toxic.

* Carbon monosulfide (CS): This is a highly reactive gas that exists only in small amounts.

* Carbon subsulfide (C₃S₂): This is a red liquid with a strong, unpleasant odor.

The specific formula for the compound will depend on the specific ratio of carbon and sulfur atoms.

To determine the correct formula, you'd need more information, such as the name of the compound or its specific properties.