MFS transporter; part of the gene cluster that mediates the biosynthesis of the bibenzoquinone oosporein, a metabolite required for fungal virulence that acts by evading host immunity to facilitate fungal multiplication in insects (PubMed:26305932). The function of this putative MFS transporter remains unclear since its deletion leads to increased oosporein production (PubMed:26305932). Expression is positively regulated by the oosporein cluster specific regulator OpS3 that binds the promoter at a 5'-CGGA-3' motif (PubMed:26305932). Significantly increases oosporein production (PubMed:26305932). Belongs to the major facilitator superfamily.