You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(E)-3-[6'-[(E)-3-[2-carboxy-5,8-dioxo-7-(2-oxo-3-thiophen-2-ylpropyl)-5lambda4-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]prop-2-enoxy]-2',7'-difluoro-3-oxospiro[2-benzofuran-1,9'-xanthene]-3'-yl]oxyprop-1-enyl]-5,8-dioxo-7-(2-oxo-3-thiophen-2-ylpropyl)-5lambda4-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C54H40F2N2O15S4
assistant