You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 5-amino-2,4-dioxo-N-[(1S)-6-phenylmethoxy-2,3-dihydro-1H-inden-1-yl]-1H-pyrimidine-6-carboxamide ?
user
C21H20N4O4
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