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 device. Please write the SMILES representation of it.
user
c1ccc(-c2cccc3c2oc2c(-c4ccc5cc(-c6ccc(N(c7ccccc7)c7ccccc7)cc6)ccc5c4)cccc23)cc1
assistant