You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a cgrp antagonist and belongs to the cgrp receptor antagonist class of molecules, with the characteristic of being migraine treatment.
user
O=C([O-])CC1C(=O)Nc2cccc([N+](=O)[O-])c21
assistant