Presilphiperfolanol synthase (EC 4.2.3.74, BcBOT2, CND15) is an enzyme with systematic name (2E,6E)-farnesyl-diphosphate diphosphohydrolase (presilphiperfolan-8ò-ol-forming). This enzyme catalyses the following chemical reaction
This enzyme requires Mg<sup>2+</sup>.