CC(=O)OC1=CC(OC2=C(OC(C)=O)C(OC(C)=O)=CC(OC3=C(OC(C)=O)C(OC(C)=O)=C(OC(C)=O)C=C3OC3=CC(OC(C)=O)=C(OC(C)=O)C(OC4=C(OC5=CC(OC(C)=O)=C(OC(C)=O)C(OC(C)=O)=C5)C=C(OC(C)=O)C(OC(C)=O)=C4OC(C)=O)=C3)=C2)=CC(OC(C)=O)=C1OC(C)=O