You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It belongs to the cancer treatment class of molecules. Use the above information to create a molecule.
user
COc1cc(-c2cnc3c(NC(CC(C)C)C(=O)OC(C)(C)C)nc4ccccc4n23)ccc1C
assistant