You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a tachykinin receptor antagonist and belongs to the histamine receptor antagonist class of molecules.
user
CCOCCn1c(N2CCCN(CCC3(Cc4ccc(F)cc4)CCN(Cc4ccccc4C)C3=O)CC2)nc2ccccc21
assistant