You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-hydroxyphenyl)-4-(4-propoxyphenyl)-5-(pyridin-3-ylmethyl)-1,2,3,3a,4,6a-hexahydropyrrolo[3,4-c]pyrazol-6-one The above is the IUPAC name of a molecule. Write its molecular formula.
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