You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a organic electroluminescent device and is electroluminescent.
user
CCCCc1cc2c(nc1C)oc1c(-c3ccc(-c4cccc(-c5ccc(-c6cccc7c6oc6nc(C)ccc67)nc5)c4C(CC)(CC)c4cc(C)cc(C)c4)cn3)cccc12
assistant