Showing structure for (2s,3s,6s,8r)-4-chloro-3-ethenyl-2-isothiocyanato-3,7,7,10-tetramethyl-10-azatetracyclo[6.6.1.1²,⁶.0¹¹,¹⁵]hexadeca-1(14),4,11(15),12-tetraene-9,16-dione