You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a serotonin antagonist and belongs to the anti psychotic class of molecules.
user
O=c1[nH]c2cc(Cl)cc(Cl)c2c(=O)n1Cc1cccc2ccccc12
assistant