Showing structure for 2,4-dihydroxy-3-[(1-hydroxy-3-{10-hydroxy-5,9-dimethyl-4-oxo-8-oxatetracyclo[7.2.1.1⁷,¹⁰.0¹,⁶]tridec-2-en-5-yl}propylidene)amino]benzoic acid