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: The molecule is organic light-emitting.
user
CC1(C)c2ccccc2-c2c(-c3c4cccc(-c5cccc6ccc7oc8ccccc8c7c56)c4cc4c(-c5ccc(CC6(C)c7ccccc7-c7c(-c8c9cccc(-c%10cccc%11c%10ccc%10oc%12ccccc%12c%10%11)c9cc9c(-c%10cccc%11c%10ccc%10oc%12ccccc%12c%10%11)cccc89)cccc76)c6ccc7oc8ccccc8c7c56)cccc34)cccc21
assistant