You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(1H-indole-3-carbonyl)-N-[(2S)-3-methyl-1-oxo-1-(1,3-thiazol-2-ylamino)butan-2-yl]piperazine-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26N6O3S
assistant