You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-2-[6-(5-methyl-2,4-dioxopyrimidin-1-yl)-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-2-yl]propanenitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H18N3O6P
assistant