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. 2024 Aug 30;29(17):4125. doi: 10.3390/molecules29174125
No R2″ X R4″ R5″ R6″
18 H N H H H
19 H CCl H H H
20 H CH Cl H H
21 H CH H H H
22 H CH Ph H H
23 H COCH3 OCH3 OCH3 H