You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a anti bodydrug conjugate.
user
O=C(O)CCOCC(CCCN1C(=O)C=CC1=O)(CN1C(=O)C=CC1=O)CN1C(=O)C=CC1=O
assistant