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system
What is the molecular formula of the compound with this IUPAC name 11-oxa-3,5,15-triaza-1-azoniapentacyclo[10.7.0.02,10.03,8.013,18]nonadeca-1(12),2(10),4,6,8,13(18),14,16-octaene ?
user
C14H9N4O+
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