You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a anti biotic and belongs to the anti bacterial class of molecules, with the characteristic of being anti bacterial agent. Please represent the molecule in SMILES.
user
O=C(NC1C(Br)OC(COC(=O)c2ccccc2)C(OC(=O)c2ccccc2)C1OC(=O)c1ccccc1)c1ccccc1
assistant