di-tert-butyl 4-acetoxyheptanedioate

11-hydroxy-10,11,12,13-tetrahydro-7H-dinaphtho[2,1-b:1',2'-d][1,6]diazacyclotridecine-8,14(9H,15H)-dione

8,14-dioxo-8,9,10,11,12,13,14,15-octahydro-7H-dinaphtho[2,1-b:1',2'-d][1,6]diazacyclotridecin-11-yl acetate