Showing structure for (13r,23r)-3,13,19,23-tetrahydroxy-5,7,29-trimethoxy-13,23-dimethyl-16-oxahexacyclo[15.12.0.0²,¹¹.0⁴,⁹.0¹⁸,²⁷.0²⁰,²⁵]nonacosa-1(17),2(11),3,5,7,9,18,20(25),26,28-decaene-15,21-dione