Showing structure for (1r,17s,18s)-12-hydroxy-20-methoxy-8,8-dimethyl-17-(prop-1-en-2-yl)-3,9,23-trioxahexacyclo[16.4.1.0¹,¹⁸.0²,¹⁵.0⁴,¹³.0⁵,¹⁰]tricosa-2(15),4,6,10,12,20-hexaene-14,19,22-trione