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 anti tumor.
user
CCCCCC(=O)C(O)C1OC(n2cnc3c(=O)[nH]c(N)nc32)C(OC(C)=O)C1OC(C)=O
assistant