You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a anti tumor activity and is anti tumor. Please write the SMILES representation of it.
user
CCCCCCCCC=CCCCCCCCC(=O)OCC(COC(=O)NCCNCC)OC(=O)CCCCCCCC=CCCCCCCCC
assistant