2,8-diethynyl-4,10-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine 6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine, 2,8-diethynyl-4,10-dimethyl- InChI=1/C21H18N2/c1-5-16-7-14(3)20-18(9-16)11-22-13-23(20)12-19-10-17(6-2)8-15(4)21(19)22/h1-2,7-10H,11-13H2,3-4H