You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(4-amino-2-oxopyrimidin-1-yl)-3-hydroxypropan-2-yl]oxymethylphosphonic acid;1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H27N8O10P
assistant