What is the molecular formula of the compound with this IUPAC name 15-fluoro-14-[3-(methylamino)pyrrolidin-1-yl]-N-[2-(1-methylpyrrolidin-2-yl)ethyl]-18-oxo-12-oxa-1-azapentacyclo[11.7.1.02,11.04,9.017,21]henicos-19-ene-19-carboxamide ?