You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a organic light-emitting device and belongs to the organic light-emitting class of molecules, known to have an effect on light-emitting device.
user
c1ccc(-c2cc(-c3ccccc3)nc(-c3cccc4c(-c5nc(-c6ccccc6)cc(-c6ccccc6)n5)cccc34)n2)cc1
assistant