You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is organic light-emitting.
user
Cn1c2ccccc2c2c(-c3cccc4c(-c5ccc6c(-c7ccccc7)cccc6c5)c5cccc(-c6cccc7c6c6ccccc6n7C)c5cc34)cccc21
assistant