You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1'-methyl-1-[2-(4-phenylpiperazin-1-yl)ethyl]spiro[3H-quinazoline-2,4'-piperidine]-4-one;sulfuric acid ?
user
C25H35N5O5S
assistant