You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[(1R,2R,3R,4S)-2,3-dihydroxy-4-[[[(1S)-1-phenylethyl]amino]methyl]cyclopentyl]-5-methylpyrimidine-2,4-dione .
user
C19H25N3O4
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