You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-methyl-N-[1-[2-(1-methylimidazol-2-yl)piperazin-1-yl]-1-oxopropan-2-yl]pyrazole-4-sulfonamide into its molecular formula.
user
C15H23N7O3S
assistant