8-(bromomethyl)-6a,9a-dichloro-2-[[3-chloro-6-(trifluoromethyl)pyridin-2-yl]-methylamino]-6-[5-(hydroxymethyl)furan-2-yl]-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone The above is the IUPAC name of a molecule. Write its molecular formula.