You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 13-ethyl-10-oxo-1,3,13-triazatricyclo[7.4.0.02,7]trideca-2(7),3,5,8,11-pentaene-11-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H15N3O3
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