The exact Coca Cola formula is still most discreetly kept secret in the world of business. However the oldest version of its ingredients are well known today.
This recipe is attributed to a diary owned by Coca-Cola inventor, John S. Pemberton, just before his death in 1888. Yet, it does not specify when or how the ingredients are mixed, or the flavoring oil quantity units of measure (though it implies that the "Merchandise 7X" was mixed first). This was common in recipes at the time, as it was assumed that preparers knew the method.
So I was inspired to explore this formula in an "infographic" way. 
Recipe of Coca Cola