You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[4-[(4-tert-butyl-1,3-thiazol-2-yl)methyl]piperazin-1-yl]-N-(2-fluorophenyl)acetamide;oxalic acid by IUPAC nomenclature, provide its molecular formula.
user
C22H29FN4O5S
assistant