Showing structure for COC1=CC(=CC(OC)=C1O)C1=[O+]C2=C3C(OC(=CC3=C1OC1OC(COC(=O)\C=C\C3=CC=C(O)C=C3)C(O)C(O)C1O)C1=CC=C(O)C=C1)=CC(O)=C2