Turpentine is not a single compound with a specific molecular formula. It's a mixture of various organic compounds, primarily terpenes, extracted from the resin of coniferous trees.

The most common terpene in turpentine is alpha-pinene, with a molecular formula of C₁₀H₁₆. However, turpentine also contains other terpenes like beta-pinene, limonene, and camphene, each with their own molecular formulas.

Therefore, there's no single molecular formula representing turpentine.