You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule oxetan-3-yl 4-[2-[4-(2-hydroxypropan-2-yl)-1,3-thiazol-2-yl]-1H-pyrrolo[2,3-b]pyridin-4-yl]piperazine-1-carboxylate .
user
C21H25N5O4S
assistant