You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a organic light-emitting device and belongs to the delayed fluorescence class of molecules.
user
CC(C)(C)c1cc(C(C)(C)C)c2c(c1)c1cc(C(C)(C)C)cc3c1n2-c1c(-c2ccccc2)cc(-c2nc(-c4ccccc4)nc(-c4ccccc4)n2)cc1-c1cccc(c1)C3(C)C
assistant