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What is the molecular formula of the molecule 2-[13-(2-amino-2-oxoethyl)-5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),2,4(16),8,10-pentaen-6-yl]acetamide ?
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C18H12N4O6
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