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: The molecule is a organic light-emitting diode. Please write the SMILES representation of it.
user
c1cc(-c2cc(-c3ccc4ccccc4c3)nc3ccc(-c4ccc5ccccc5c4)cc23)cc(-c2cccc3cccnc23)c1
assistant