What is the chemical formula for duralumin? not what it is made of; something like co2.

The main alloying constituents are copper, manganese, and magnesium. A commonly used modern equivalent of this alloy type is AA2024, which contains 4.4% copper, 1.5% magnesium, 0.6% manganese and 93.5% aluminium by weight. Typical yield strength is 450 MPa 

If you do the math you can figure out the chemical formula. Just use the empirical formula

I’m guessing you’re more alert to yourself or your surroundings if you’re more concentrated