Dithane is a common name for a group of fungicides, and it's important to know which specific Dithane product you're referring to as they have different chemical formulas.

Here are some of the most common Dithane products and their chemical formulas:

* Dithane M-45: Mancozeb, with the formula C₁₂H₂₀MnN₂O₄S₄.

* Dithane Z-78: Zineb, with the formula C₁₀H₁₀N₂O₂S₄Zn.

* Dithane 948: Maneb, with the formula C₄H₆MnN₂O₂S₄.

Therefore, you need to specify which Dithane product you're interested in to know its exact chemical formula.