Showing structure for (1s,13r)-7,11,17,19,23-pentaoxahexacyclo[11.10.0.0²,¹⁰.0⁴,⁸.0¹⁴,²².0¹⁶,²⁰]tricosa-2(10),3,5,8,14,16(20),21-heptaene