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: It has an effect on light-emitting device.
user
Cc1ccc(N(c2ccc(C(C)(C)C)cc2)c2cc(N(c3ccc(C)cc3)c3ccc(C(C)(C)C)cc3)c3ccc4c(N(c5ccc(C)cc5)c5ccc(C(C)(C)C)cc5)cc(N(c5ccc(C)cc5)c5ccc(C(C)(C)C)cc5)c5ccc2c3c54)cc1
assistant