You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,9R,10R)-10-(hydroxymethyl)-4-(propan-2-yloxymethyl)-8,11-dioxa-2,6-diazatricyclo[7.2.1.02,7]dodeca-3,6-dien-5-one by IUPAC nomenclature, provide its molecular formula.
user
C13H18N2O5
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