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: It belongs to the organic light-emitting diode class of molecules.
user
Cc1cc(N2c3ccc(-c4ccc5c(-c6ccccc6)c6cc(-c7ccc8c(c7)C7(C)CCCCC7(C)N8c7ccnc(C)c7)ccc6c(-c6ccccc6)c5c4)cc3C3(C)CCCCC23C)ccn1
assistant