You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: When heated to decomposition, emits highly toxic vapors. 2,4-d esters/ Please represent the molecule in SMILES.
user
CCCCOC(C)COC(=O)COc1ccc(Cl)cc1Cl
assistant