What is the chemical formula for red cabbage juice?

There isn't a single chemical formula for red cabbage juice. It's a complex mixture of many different compounds, including:

* Anthocyanins: These are the pigments responsible for the red color of the juice. There are several different types of anthocyanins in red cabbage, and their specific chemical formulas vary.

* Flavonoids: These are other types of plant pigments that contribute to the color and flavor of the juice.

* Sugars: Red cabbage juice contains sugars like glucose and fructose.

* Water: This is the primary component of the juice.

* Organic acids: These include malic acid, citric acid, and oxalic acid, which contribute to the tartness of the juice.

* Minerals: Red cabbage juice contains trace amounts of minerals like potassium, calcium, and iron.

Therefore, it's not possible to express the composition of red cabbage juice with a single chemical formula.