1,11'-[1,4-Phenylene-bis-(methylene)]-1,4,8,11-tetraazacyclotetradecane-1,4,7,11-tetraazacyclotetradecane 11-[[4-(1,4,8,11-Tetraazacyclotetradec-1-ylmethyl)phenyl]methyl]-1,4,7,11- tetraazacyclotetradecane AIDS-025310 AIDS025310 Bis(tetraazacyclotetradecane) deriv.