[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][C][=N][N][Branch1][Ring2][C][Ring1][=Branch1][C][C][=C][Branch1][=N][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][Branch2][Cl]"}, {"from": "gpt", "value": "The molecule is a member of the class of pyrimidones that is uracil substituted by chloro and (2-iminopyrrolidin-1-yl)methyl groups at positions 5 and 6 respectively. Used (as the hydrochloride salt) in combination with trifluridine, a nucleoside metabolic inhibitor, for treatment of advanced/relapsed unresectable colorectal cancer. It has a role as an antineoplastic agent and an EC 2.4.2.4 (thymidine phosphorylase) inhibitor. It is a pyrimidone, an organochlorine compound, a carboxamidine and a member of pyrrolidines. It is functionally related to a uracil. It is a conjugate base of a tipiracil(1+)."}]