Showing structure for 14,16-dimethoxy-5,7,11,19-tetraoxapentacyclo[10.8.0.0²,¹⁰.0⁴,⁸.0¹³,¹⁸]icosa-1(12),2,4(8),9,13(18),14,16-heptaen-15-yl acetate