[{"from": "human", "value": "Describe this molecule. [C][=C][C][=Branch1][=Branch2][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][Cl][C][Branch1][S][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][=C][N][Ring1][#Branch1][N][C][=C][N][=C][Ring1][Branch1].[Cl]"}, {"from": "gpt", "value": "The molecule is the fumarate salt of an orally-active benzimidazole derivative with potential antineoplastic activity. As a retinoic acid metabolism blocking agent (RAMBA), liarozole inhibits cytochrome P450-dependent all-trans-retinoic acid (ATRA)-4-hydroxylase, resulting in an increase in endogenous ATRA production, inhibition of cell proliferation, and induction of cell differentiation. This agent also inhibits aromatase, the enzyme that catalyzes the final, rate-limiting step in estrogen biosynthesis."}]