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system
Name the molecular formula for the molecule established as (3S,3aS,6aR)-5-benzyl-3-(2-hydroxyphenyl)-1-methyl-2,3,3a,6a-tetrahydropyrrolo[3,4-c]pyrazole-4,6-dione using the IUPAC nomenclature.
user
C19H19N3O3
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