You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-N,1-N,2-N,2-N,2-N',2-N',4-N,4-N,5-N,5-N,6-N,6-N,7-N,7-N,8-N,8-N-hexadecamethyl-1,3,5,7-tetraza-2lambda5,4,6,8-tetraphosphacyclooct-2-ene-1,2,2,4,5,6,7,8-octamine into molecular formula.
user
C16H48N12P4
assistant