I assume you're referring to the mole ratio that exists between the atoms that form the molecule.
Here's how the TEA molecule looks like
TEA is basically a tertiary amine that has three alcohol groups attached. Its empirical formula, which is also its molecular formula, is
The subscripts each element has represent the number of moles of that respective element needed to make 1 mole of TEA. In other words, 1 mole of TEA has
- 6 moles of carbon;
- 15 moles of hydrogen;
- 3 moles of oxygen;
- 1 mole of nitrogen;