You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3,3-dimethyl-6-[(2-phenoxyacetyl)amino]-7-sulfanylidene-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid ?
user
C16H18N2O4S2
assistant