You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 9-thia-2,3,4,5,11-pentazatetracyclo[11.4.0.02,6.07,11]heptadeca-1(17),3,5,13,15-pentaen-12-one into its molecular formula.
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C11H9N5OS
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