1.17.1.3 2,3-trans-flavanols biosynthesis - - PWY-6029 1.17.1.3 Biosynthesis of secondary metabolites - 01110 - 1.17.1.3 Flavonoid biosynthesis - 00941 - 1.17.1.3 proanthocyanidins biosynthesis from flavanols - - PWY-641