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 a anti tumor.
user
C=C(C)OC12COC1CC(OC)C1(C)C(=O)C(OC(=O)OC)C3=C(C)C(OC(=O)C(O)C(NC(=O)N(C)C)c4ccccc4)CC(O)(C(OC(=O)c4ccccc4)C21)C3(C)C
assistant