You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the anti tumour class of molecules.
user
CC(C)(C)OC(=O)N1CCC(CCOC(=O)OCCC2CCN(C(=O)OC(C)(C)C)CC2)CC1
assistant