4-Methyl-8-(hydroxymethyl)-6-oxa-3-azabicyclo[3.2.1]octa-1(8),2,4-triene-7-one;8-(Hydroxymethyl)-4-methyl-6-oxa-3-azabicyclo[3.2.1]octa-1,3,5(8)-trien-7-one
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