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 (6R)-N-tert-butyl-5-[(3-chlorophenyl)methyl]-6-methyl-4-oxo-2-thiophen-2-yl-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide .
user
C23H25ClN4O2S
assistant