Showing structure for 3,9,15,21-tetrahydroxy-11,19-dimethyl-6,14,24-trioxaheptacyclo[16.7.1.1⁴,⁸.0¹,¹⁵.0²,¹³.0²²,²⁶.0¹²,²⁷]heptacosa-2(13),3,8(27),9,11,18(26),19,21-octaene-7,17,23-trione