You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule methyl (6R)-7-amino-4-[[2-(2-ethyl-6-propoxyphenyl)acetyl]amino]-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate .
user
C23H31N3O6S
assistant