You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (E)-3-[1-[(1R)-1-[(2R)-1,3-dihydroxybutan-2-yl]oxyethyl]-2,4-dioxopyrimidin-5-yl]prop-2-enoic acid is given. What is its corresponding molecular formula?
user
C13H18N2O7
assistant