Showing structure for 13-hydroxy-16-methoxy-8-(4-methoxyphenyl)-4,14,19,19-tetramethyl-5,9,18-trioxapentacyclo[14.2.1.0¹,¹⁴.0⁴,¹³.0⁶,¹¹]nonadeca-6(11),7-diene-10,15,17-trione