Showing structure for (10z,17z,19r,26r)-9-ethyl-4,12,26-trihydroxy-3,13,17-trimethyl-14-oxa-21-azatetracyclo[17.6.1.0⁵,²⁵.0²²,²⁶]hexacosa-1(25),2,4,10,17,22-hexaene-6,15,16,20,24-pentone