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2,16-Dichloro-8,22-diethyl-4,18-dioxa-8,10,14,22,24,28-hexazaheptacyclo[15.11.0.03,15.05,13.07,11.019,27.021,25]octacosa-1(28),2,5(13),6,11,14,19(27),20,25-nonaene-9,23-dione


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