You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (6R,7R)-7-[[(2R)-2-carboxypropanoyl]amino]-7-methoxy-3-methyl-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid into its molecular formula.
user
C13H16N2O8
assistant