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 cancer treatment member of the anti bodydrug conjugate class.
user
CCC(O)C(C)C1OC1CC(C)(O)C=CC=C(C)C1OC(=O)CC(O)CCC(C)(OC)C(OC(=O)N2CCN(CCOCCN3C(=O)C=CC3=O)CC2)C=CC1C
assistant