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What is the molecular formula of the molecule ethyl 6-(3-oxa-14,21-diazahexacyclo[15.7.1.02,15.04,13.07,12.021,25]pentacosa-1(25),2(15),4,7,9,11,13,16-octaen-6-ylideneamino)hexanoate ?
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C30H33N3O3
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