OCC1OC(OC2=CC3=C4C(C(O3)C3=CC=C(O)C=C3)C3=CC(O)=CC5=C3C(C(O5)C3=CC=C(O)C=C3)C3=CC(O)=CC5=C3C(C(O5)C3=CC=C(O)C=C3)C4=C2)C(O)C(O)C1O