You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[(6,8-difluoro-4-methyl-2-oxochromen-7-yl)oxymethyl]-7-formamido-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid .
user
C19H14F2N2O7S
assistant