Enables carboxylic ester hydrolase activity. Predicted to be involved in several processes, including cellular response to cholesterol; cholesterol homeostasis; and regulation of steroid metabolic process. Predicted to act upstream of or within several processes, including cellular lipid catabolic process; temperature homeostasis; and very-low-density lipoprotein particle assembly. Located in intracellular membrane-bounded organelle. Orthologous to human CES1 (carboxylesterase 1). [provided by Alliance of Genome Resources, Apr 2022]