Non-reducing polyketide synthase (NRPKS); part of the gene cluster that mediates the biosynthesis of aflavarin, a bicoumarin that exhibits anti-insectan activity against the fungivorous beetle C.hemipterus (Ref.2, PubMed:26209694). Catalyzes the formation of the aromatic polyketide from acetyl coenzyme A and seven malonyl coenzyme A molecules (PubMed:26209694). Binds 1 phosphopantetheine covalently. Secondary metabolite biosynthesis. Expressed mainly in sclerotia, with expression levels 20-fold and 10-fold greater than the expression levels of this gene found in mycelium and conidia, respectively (PubMed:26209694). Expression is induced by the developmental and secondary metabolism regulator veA (PubMed:26209694). Multidomain protein; including a starter unit:ACP transacylase (SAT) that selects the starter unit; a ketosynthase (KS) that catalyzes repeated decarboxylative condensation to elongate the polyketide backbone; a malonyl-CoA:ACP transacylase (MAT) that selects and transfers the extender unit malonyl-CoA; a product template (PT) domain that controls the immediate cyclization regioselectivity of the reactive polyketide backbone; and an acyl-carrier protein (ACP) that serves as the tether of the growing and completed polyketide via its phosphopantetheinyl arm (PubMed:26209694). Impairs aflavarin biosynthesis and leads to a reduction of sclerotial production (PubMed:26209694).