![Synthesis and potential biological activity of some novel 3-[(N-substituted indol-3-yl)methyleneamino]-6-amino-4-aryl-pyrano(2,3-c)pyrazole-5-carbonitriles and 3,6-diamino-4-(N-substituted indol-3-yl)pyrano(2,3-c)pyrazole-5-carbonitriles Cover](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6470750d71e4585e08a9d8e5/cover-image.jpg)
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