You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-methyl-N-[1-[2-oxo-2-(5-sulfamoyl-2,3-dihydroindol-1-yl)ethyl]piperidin-4-yl]-1,3-thiazole-5-carboxamide into its molecular formula.
user
C20H25N5O4S2
assistant