You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,5R,6R)-6-[(1S)-1-hydroxy-3,3-dimethyl-2-oxobutyl]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C14H21NO5S
assistant