[{"from": "human", "value": "Provide a description of this molecule. [C][C][N][C][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][/C][\\-Ring1][Branch2][=C][Branch1][N][/C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][F][\\C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C]"}, {"from": "gpt", "value": "The molecule has the potential to provide benefit to patients with lung cancer and acute myelogenous leukemia. XL999 is a new chemical entity that inhibits a spectrum of receptor tyrosine kinases (RTKs) with growth promoting and angiogenic properties, including FGFR 1/3, PDGFR\u03b1/\u03b2, VEGFR2/KDR, KIT, and FLT3. XL999 also inhibits FLT4 and SRC. XL999 has the potential to prevent tumor growth \u2014 both directly by a novel effect on tumor cell proliferation and indirectly through inhibition of the host angiogenic response. XL999 induces a cell-cycle block by a mechanism distinct from those previously identified and exhibits broad antitumor activity in xenograft models."}]