Showing structure for (1r,2s,3s,7s,9r,12r,13s,14s,15s,16r,17r)-3,12,14,15,16-pentahydroxy-2,6,14,17-tetramethyl-10-oxatetracyclo[7.7.1.0²,⁷.0¹³,¹⁷]heptadec-5-ene-4,11-dione