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 nmda receptor modulator.
user
CC(O)C(NC(=O)C1CCN(C(=O)C2CCCN2C(=O)O)C1)C(N)=O
assistant