You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by sodium;(6S,7R)-3-[(E)-2-(4-aminopyrimidin-5-yl)ethenyl]-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate ?
user
C18H15N8NaO5S2
assistant