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 that fulfills the requirement: It belongs to the anti neoplastic class of molecules.
user
COC12C(COC(N)=O)C3=C(C(=O)C(C)=C(N4CCSCC4)C3=O)N1CC1NC12
assistant