You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[bis(dimethylamino)-[[2-(2,2-dimethylpropyl)-1-methyl-1,3,2-diazaphosphinan-2-ium-2-yl]imino]-lambda5-phosphanyl]-N-methylmethanamine by IUPAC nomenclature, provide its molecular formula.
user
C15H39N6P2+
assistant