Showing structure for (1r,2r,4s,7s,8s,10s,11s,12r,18s)-7-(furan-3-yl)-10-hydroxy-1,8,12,17,17-pentamethyl-3,6,16-trioxapentacyclo[9.9.0.0²,⁴.0²,⁸.0¹²,¹⁸]icos-13-ene-5,15,20-trione