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 electroluminescent element and belongs to the electroluminescent class of molecules.
user
CC1(C)c2cc(-c3ccc4c(c3)c3ccccc3n4-c3ccccc3)ccc2-c2ccc(N(c3ccc(-n4c5ccccc5c5c(-c6cccc7c6c6ccccc6n7-c6ccc(N(c7ccc(-c8ccc(-c9ccc%10c(c9)c9ccccc9n%10-c9ccccc9)cc8)cc7)c7ccc(-n8c9ccccc9c9ccccc98)cc7)c7ccccc67)cccc54)cc3)c3ccc(-n4c5ccccc5c5ccccc54)c4ccccc34)cc21
assistant