procyanidin C4

3-O-galloylepicatechin-(4β-6)-3-O-galloylepicatechin-(4β-8)-catechin

cinnamtannin D2

epicatechin-(4β→6)-epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin

epicatechin-(4β->b6)-epicatechin-(4β->8, 2β->O->7)-epicatechin