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 both the anti body and anti body drug conjugate classes of molecules.
user
CCCCOc1cc(OC2OC(C(=O)O)C(O)C(O)C2O)ccc1COC(C)=O
assistant