COC1=C(C=CC=C1)C(=O)OC1C(O)C(C)OC(OC2=CC(O)=C3C(OC(C4=CC=C(O)C=C4)=C(OC4OC(COC5OC(C)C(O)C(O)C5O)C(O)C(O)C4OC4OC(CO)C(O)C(O)C4O)C3=O)=C2)C1O