You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: It belongs to both the organic electroluminescent device and electroluminescent classes of molecules. Please write the SMILES representation of it.
user
c1ccc(-c2ccc(-c3nc(-c4ccccc4)nc(-c4cc(-c5ccc6cc7c(cc6c5)-c5ccccc5C7(c5ccccc5)c5ccccc5)c5ccccc5c4)n3)cc2)cc1
assistant