You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the anti allergic agent class of molecules.
user
CC(=O)OCC(OC(C)=O)C1OC(O)C(OC(C)=O)C(OC(C)=O)C1OC(C)=O
assistant