You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6R,7S)-3-[[1-(2-amino-2-oxoethyl)pyridin-1-ium-4-yl]sulfanylmethyl]-8-oxo-7-[[2-(3,5,6-trichloropyridin-2-yl)ethanethioyl]amino]-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
C22H19Cl3N5O4S3+
assistant