You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,5R)-6-[[2-(1,3-benzothiazol-2-yl)acetyl]oxymethyl]-3,3-dimethyl-4,4,7-trioxo-4lambda6-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H18N2O7S2
assistant