You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6S,7R)-7-[[2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-[[4-(1,3-oxazol-5-yl)pyridin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H20N7O6S2+
assistant