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 2-[6-[1-(2-chlorophenyl)-5-methylpyrazol-3-yl]-7-methyl-5-oxo-[1,3]thiazolo[3,2-a]pyrimidin-3-yl]-N-hydroxyacetamide .
user
C19H16ClN5O3S
assistant