You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,5R)-2-(2-hydroxy-1-phenylethenoxy)carbonylimino-7-oxo-6-aza-2-azoniabicyclo[3.2.0]heptane-6-sulfonic acid by IUPAC nomenclature, provide its molecular formula.
user
C14H14N3O7S+
assistant