73699-70-4 22H-8,11:18,21-Dietheno-23,36-(iminomethano)- 13,16:31,35-dimetheno-1H,16H-[1,- 6,9]oxadiazacyclohexadecino[4,5-m][10,2,16]- benzoxadiazacyclotetracosine-26-carboxylic acid,3-(3-amino-3-oxopropyl)-10,19- dichloro-6-[[(2R)-2-(dimethylamino)-1- oxopropyl]am