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(-c2ccc(-c3cc(-c4cccc5sc6c(-c7nc(-c8ccccc8)cc(-c8ccccc8)n7)cccc6c45)nc(-c4ccccc4)n3)cc2)cc1
assistant