You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule has Mild. Phthalic anhydride hydrolyzes rapidly in the presence of water forming phthalic acid. half-life for phthalic anhydride was 30.5 seconds at ph 7.24. at ph 6.8 the half-life of phthtalic anhydride in water was prolonged to 61 seconds.
user
O=C1OC(=O)c2ccccc21
assistant