You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: It belongs to the tachykinin receptor antagonist class of molecules. Please write the SMILES representation of it.
user
COc1ccccc1CCC(=O)NC(N)C(Cc1c[nH]c2ccccc12)C(=O)COc1ccccc1C(N)=O
assistant