12,24-Dimethoxy-14,22-dioxa-3,8,28-triazapentacyclo[21.2.2.2~4,7~.2~10,13~.1~16,20~]dotriaconta-1(25),2,4,6,8,10,12,16(28),17,19,23,26,29,31-tetradecaene AIDS-149112 AIDS149112 NSC682819