You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[N-acetyl-3-(7-but-2-ynyl-1-methyl-6-oxo-8-piperazin-1-ylpurin-2-yl)oxyanilino] 2,2,2-trifluoroacetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H24F3N7O5
assistant