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 member of the organic light-emitting device class and affects electron transport.
user
c1ccc(-c2cc(-c3ccccc3)nc(-n3c4ccc(-c5ccc6oc7ccc(-c8ccc9c(c8)c8ccc%10c%11ccccc%11sc%10c8n9-c8ccccc8)cc7c6c5)cc4c4cc5c(cc43)c3ccccc3n5-c3ccccc3)n2)cc1
assistant