You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4,4,5,5-tetramethylspiro[1,3-dioxa-2-boranuidacyclopentane-2,7'-3,11-dithia-6-azonia-7-boranuidatricyclo[6.3.0.02,6]undeca-1(8),2(6),4,9-tetraene] into its molecular formula.
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C13H16BNO2S2
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