You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a organic light-emitting device that has an effect on light emission. Use the above information to create a molecule.
user
c1ccc2c(c1)ccc1sc3ccc4oc5ccc(-c6c7ccccc7c(-c7ccc8oc9ccccc9c8c7)c7ccccc67)cc5c4c3c12
assistant