Showing structure for 13-hydroxy-7-(5-hydroxy-2-oxo-5h-furan-3-yl)-1,8,12,17,17-pentamethyl-3,6,16-trioxapentacyclo[9.9.0.0²,⁴.0²,⁸.0¹²,¹⁸]icosane-5,15,20-trione