You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R)-5-[3-(4-chlorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-2-phenyl-1,2,4-triazolidin-3-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H17ClN4O2
assistant