You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-1-(4,4,5,5-tetramethyl-2-oxo-1,3,2lambda5-dioxaphospholan-2-yl)propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C10H19O4P
assistant