You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6S)-2-methoxycarbonyl-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H14N2O6S2
assistant