You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
benzyl (6R)-7-oxo-6-[(2-phenoxyacetyl)amino]-3-(2-phenylacetyl)-1,3-diazabicyclo[3.2.0]heptane-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H27N3O6
assistant