You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-O-[(2,4-dioxo-1H-pyrimidin-6-yl)methyl] 4-O-(2-methylpropanoyloxymethyl) (E)-but-2-enedioate .
user
C14H16N2O8
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