Cytochrome P450 monooxygenase; part of the gene cluster that mediates the biosynthesis of alpha-cuprenene and oxidized derivatives (PubMed:19400802). The alpha-cuprenene synthase COP6 is the only sesquiterpene synthase identified in C.cinereus that appears to be part of a biosynthetic gene cluster and is highly specific since it catalyzes the cyclization of (2E,6E)-farnesyl diphosphate into only one product, alpha-cuprenene (PubMed:19400802, PubMed:20419721). The cytochrome P450 monooxygenase COX2 then oxidizes the cyclohexadiene ring of alpha-cuprenene at positions 1 and 4, yielding first alpha-cuparene, followed by alpha-cuparophenol and a further yet unidentified compound resulting from one additional oxidation step (PubMed:19400802). The cytochrome P450 monooxygenase COX1 then likely catalyzes the oxidation at position 9 of the pentane ring of alpha-cuprenene to give the corresponding hydroxy or ketone derivatives (PubMed:19400802). Secondary metabolite biosynthesis. Belongs to the cytochrome P450 family.