You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,5R,6R)-6-[(3-chlorophenyl)methylideneamino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H15ClN2O3S
assistant