You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[2-[3-(1,3-benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]pyrrol-1-yl]-N-[(3-chloro-4-fluorophenyl)methyl]acetamide into molecular formula.
user
C22H16ClFN4O4
assistant