kw.\*:("BENZOPYRANNO BENZOOXOCINNO PYRIDINE(DIOXO METHYL)\!FIN")
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A NOVEL PENTACYCLIC PYRIDINE DILACTONE. 7-METHYL (1) BENZOPYRANO (4,3-D) (1) BENZOXACINO (4,3-B) PYRIDINE-6,16-DIONERAJYALAKSHMI K; SRINIVASAN VR.1980; J. HETEROCYCL. CHEM.; ISSN 0022-152X; USA; DA. 1980; VOL. 17; NO 8; PP. 1737-1739; BIBL. 5 REF.Article
