When a 1:1 mixture of ethyl butanoate and ethyl acetate is treated with sodium ethoxide, four Claisen condensation products are possible.

-Draw the structure(s) of the product(s) that have an ethyl group on the chiral center.

-Although chirality may be mentioned in the question, do not include chirality in your drawings. .

-Do not draw organic or inorganic by-products .

-Draw one structure per sketcher. Add additional sketchers using the dropdown menu in the bottom right corner. .

-Separate multiple products using the +sign from the dropdown menu