You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: It belongs to the organic electroluminescent device, fluorescent, and electroluminescent classes of molecules.
user
CC(C)(C)c1cccc2c1oc1c(N(c3ccccc3)c3ccc4cc5c(cc4c3)oc3c(-c4ccccc4)c(-c4ccccc4)c4oc6cc7cc(N(c8ccccc8)c8cccc9c8oc8c(C(C)(C)C)cccc89)ccc7cc6c4c35)cccc12
assistant