You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (6R,7R)-7-[[(2E)-2-(2-amino-5-chloro-1,3-thiazol-4-yl)-2-(carboxymethoxyimino)acetyl]amino]-3-(imidazo[1,2-a]pyridin-1-ium-1-ylmethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate .
user
C22H18ClN7O7S2
assistant