You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a anti tumor. Use the above information to create a molecule.
user
C=C1C(=O)C23C(OC(=O)C4CCC(NC(=O)OC(C)(C)C)CC4)C1CCC2C12COC3(O)C(O)C1C(C)(C)CCC2=O
assistant