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 organic electroluminescent device and belongs to the electroluminescent class of molecules. Please represent the molecule in SMILES.
user
c1cncc(-c2cccc(-c3cnc(-c4ccc(-c5ncc(-c6cccc(-c7cccnc7)n6)o5)cc4)o3)n2)c1
assistant