You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the serotonin agonist class of molecules.
user
CC=C1CNCCN1.O=C(O)C=CC(=O)O
assistant