3W33:
reference: Design and synthesis of novel pyrimido[4,5-b]azepine derivatives as HER2/EGFR dual inhibitors., Kawakita Y, Seto M, Ohashi T, Tamura T, Yusa T, Miki H, Iwata H, Kamiguchi H, Tanaka T, Sogabe S, Ohta Y, Ishikawa T, Bioorg Med Chem. 2013 Apr 15;21(8):2250-61. doi: 10.1016/j.bmc.2013.02.014. Epub , 2013 Feb 22. PMID: 23490150

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