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 agonist and belongs to the serotonin antagonist class of molecules.
user
c1cc2c3c(c1)C1CN(CCCn4cnc5ncncc54)CCC1N3CCCS2
assistant