[{"from": "human", "value": "Please give me some details about this molecule. [C][N][C][=N][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][=Branch1][=N][C][=N][Ring1][#Branch1][N][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][Br]"}, {"from": "gpt", "value": "The molecule is a pyridopyrimidine that is pyrido[3,4-d]pyrimidine-4,6-diamine in which the amino groups at positions 4 and 6 are substituted by a m-bromophenyl group and a methyl group, respectively. It is a potent, cell-permeable, reversible ATP-competitive inhibitor of EGFR tyrosine kinase activity [IC50 values of 0.008, 49 and 52 nM for EGFR, ErbB2 (HER2) and Erb4 (HER4)]. It does not inhibit FGF or PDGF-mediated tyrosine phosphorylation. Induces G1 cell cycle arrest in MCF10A cells and is antiproliferative in A431 human epidermal carcinoma cells. It has a role as an antineoplastic agent and an EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor. It is a pyridopyrimidine, a secondary amino compound, a member of bromobenzenes, a diamine and an aromatic amine."}]