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system
Please write the molecular formula of the molecule 5-(4,6-diphenyl-1,3,5-triazin-2-yl)-9-oxa-1,3,5,13-tetrazatricyclo[8.3.0.02,6]trideca-2(6),3,10,12-tetraene;(3Z)-penta-1,3-diene .
user
C28H25N7O
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