Showing structure for 9-{[3,4-dihydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxy}-3,7,20-trihydroxy-17-methyl-12,16,21-trioxapentacyclo[15.3.1.0²,¹⁵.0⁴,¹³.0⁶,¹¹]henicosa-2(15),3,6,8,10,13-hexaen-5-one