You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [3-hydroxy-4-oxo-4-[[1-(4-phenylphenyl)sulfonylpiperidin-4-yl]methylamino]butyl]azanide by IUPAC nomenclature, provide its molecular formula.
user
C22H28N3O4S-
assistant