You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(1R,2S)-2-hydroxy-2,3-dihydro-1H-inden-1-yl]-3-(1-methyl-6-oxopyridin-3-yl)urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H17N3O3
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