Cytochrome P450 monooxygenase; part of the gene cluster that mediates the biosynthesis of 11'-deoxyverticillin A, one of the dimeric epipolythiodioxopiperazines (ETPs) from the verticillin family that act as mycotoxins. 11'-deoxyverticillin A is required for normal conidiation. The nonribosomal peptide synthetase verP is speculated to be responsible for condensation of amino acids to form the carbon skeleton of verticillin, whereas the cluster-specific tailoring enzymes are involved in further modifications leading to the production of 11'-deoxyverticillin A (Probable)