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 a organic electroluminescent device that is both fluorescent and electroluminescent.
user
CCn1c2ccccc2c2c(N(c3ccccc3)c3ccc4cc5c(cc4c3)oc3c5ccc4oc5cc6cc(N(c7ccccc7)c7cccc8c7c7ccccc7n8CC)ccc6cc5c43)cccc21
assistant