You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: It belongs to the serotonin antagonist class of molecules.
user
O=c1[nH]c2ccccc2c(=O)n1CCN1CCC(=C2c3ccc(Cl)cc3CCc3cccnc32)CC1
assistant