ethyl 4-hydroxy-7-methyl-2-oxo-1-(prop-2-ynyl)-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-7-methyl-2-oxo-1-(prop-2-ynyl)-1,2-dihydro-1,8-naphthyridine-3-carboxylate

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