You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a migraine treatment member of the cgrp receptor antagonist class.
user
O=C(O)Cn1c(=O)n2c3c(cnc(Cl)c31)NC(=O)C2
assistant