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