. . . "Pentaerythritol tetraacrylate" . . . . . "pentaerythritol tetraacrylate" . . . . . . . . . "2,2-Bis{[(prop-2-enoyl)oxy]methyl}propane-1,3-diyl di(prop-2-enoate)" . "Pentaerythritol tetraacrylate" .