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 [1-cyclopropyl-6,8-difluoro-7-[2-(hydroxymethyl)-4-methylpiperazin-1-yl]-4-oxoquinolin-3-yl] hydrogen carbonate .
user
C19H21F2N3O5
assistant