12',14'-dioxa-2',8'-diazaspiro[piperidine-4,7'-tetracyclo[7.7.0.0^{2,6}.0^{11,15}]hexadecane]-1'(9'),3',5',10',15'-pentaene hydrochloride
12',14'-dioxa-2',8'-diazaspiro[piperidine-4,7'-tetracyclo[7.7.0.0?,?.0??,??]hexadecane]-1'(9'),3',5',10',15'-pentaene hydrochloride