You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[(2R,4S,5S)-3,4-dihydroxy-5-(5-methyl-6-oxo-1H-pyridin-3-yl)oxolan-2-yl]-2-methylbutan-2-yl]oxy-(1-hydroxypropyl)phosphinic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H30NO8P
assistant