You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,2,4-triphenoxy-6-(trichloromethyl)-1,3-diaza-2lambda5-phosphacyclohexa-2,4,6-triene-5-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H15Cl3N3O3P
assistant