You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R)-2-(3-chlorophenyl)-6-methylidene-4,4-bis(trifluoromethyl)-1,5-dihydropyrimidin-3-ium-5-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H9ClF6N3+
assistant