ICI 118551 [ ICI 111,581,ICI 111581,ICI 118,551,ICI 118551, hydrochloride,ICI-111581,ICI-118551,erythro-DL-1-(7-methylindan-4-yloxy)-3-isopropylaminobutan-2-ol ] RN given refers to (R*,R*)-(+-)-isomer; structure in first source; ICI 111581 is hydrochloride of ICI 118551