2,14,17,23-tetrachloro-5,11-dioxaheptacyclo[13.9.1.1^{16,20}.0^{3,7}.0^{8,25}.0^{9,13}.0^{24,26}]hexacosa-1,3(7),8,13,15(25),16(26),17,19,21,23-decaene-4,6,10,12-tetrone
2,14,17,23-tetrachloro-5,11-dioxaheptacyclo[13.9.1.116,20.03,7.08,25.09,13.024,26]hexacosa-1,3(7),8,13,15(25),16(26),17,19,21,23-decaene-4,6,10,12-tetrone