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system
What is the molecular formula of the molecule identified by 17-(2-(18F)fluoranylethoxy)-16-methoxy-5,7-dioxa-13-azoniapentacyclo[11.8.0.02,10.04,8.015,20]henicosa-1(13),2,4(8),9,14,16,18,20-octaene ?
user
C21H19FNO4+
assistant