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 7-(2,3-dihydro-1H-indene-2-carbonyl)-5,6,8,8a-tetrahydro-1H-[1,3]oxazolo[3,4-a]pyrazin-3-one .
user
C16H18N2O3
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