Showing structure for (11r,12s,13s)-3,11,22-trimethoxy-12,13-dimethyl-5,7,18,20-tetraoxapentacyclo[13.7.0.0²,¹⁰.0⁴,⁸.0¹⁷,²¹]docosa-1(15),2(10),3,8,16,21-hexaene