You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-chloro-6-nitro-4H-1,3,2-benzodioxaphosphinine;N,N-diethylethanamine;2-(hydroxymethyl)-4-nitrophenol;trichlorophosphane ?
user
C20H27Cl4N3O8P2
assistant