You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-[3-[5-(trifluoromethoxy)spiro[3,4-dihydrochromene-2,4'-piperidine]-1'-yl]-1,2-oxazol-5-yl]tetrazol-2-yl]acetic acid;hydrate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H21F3N6O6
assistant