You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a nmda antagonist. Please represent the molecule in SMILES.
user
CC(C)(C)OC(=O)N1c2cc(Cl)cc(Cl)c2C(=O)C1(C(=O)O)C(=C1CNNC1)c1ccc(NC(N)=O)cc1
assistant