1 9HD 1-[(3r,5s,7r)-1,5,7,9-tetrakis(2-oxopyrrolidin-1-yl)nonan-3-yl]-1,3-dihydro-2h-pyrrol-2-one 1.000 2 Y24 1,1',1'',1''',1''''-[(3r,5s,7s,9r)-decane-1,3,5,7,9-pentayl]penta(pyrrolidin-2-one) 0.975 3 QQ4 Hexa vinylpyrrolidone k15 0.812