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What is the molecular formula of the molecule identified by 3,3-dimethyl-2,4-dihydro-1,4-benzoxazine;3,3-dimethyl-2,4-dihydrochromene;2,2-dimethyl-1,3-dihydropyrido[3,4-b][1,4]oxazine ?
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C30H39N3O3
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