Showing structure for (1r,2r,4s,7s,8s,12s,17r)-7-(furan-3-yl)-1,8,12,16,16-pentamethyl-3,6-dioxapentacyclo[9.8.0.0²,⁴.0²,⁸.0¹²,¹⁷]nonadec-13-ene-5,15,19-trione