Showing structure for (7r,9r,10r,18r,20r,21r)-10,16,21,25-tetrahydroxy-7,9,18,20-tetramethyl-8,11,19,22-tetraoxanonacyclo[15.11.1.1⁶,²⁶.0²,¹⁵.0³,¹².0⁴,²⁷.0⁵,¹⁰.0²¹,²⁹.0²³,²⁸]triaconta-1(29),2(15),3,5,12,16,23,25,27-nonaene-14,30-dione