1-(diisocyanatomethyl)-1,3-bis(isocyanatomethyl)urea;(3E,5E)-1-(isocyanatomethyl)-3,5-bis(isocyanatomethylidene)-1,3,5-triazinane-3,5-diium-2,4,6-trione;[3-(isocyanatomethylcarbamoyloxy)-2,2-bis(isocyanatomethylcarbamoyloxymethyl)propyl] N-(isocyanatomethyl)carbamate;[3-(isocyanatomethylcarbamoyloxy)-2-[[3-(isocyanatomethylcarbamoyloxy)-2,2-bis(isocyanatomethylcarbamoyloxymethyl)propoxy]methyl]-2-(isocyanatomethylcarbamoyloxymethyl)propyl] N-(isocyanatomethyl)carbamate;[3-(isocyanatomethylcarbamoyloxy)-2-(isocyanatomethylcarbamoyloxymethyl)-2-methylpropyl] N-(isocyanatomethyl)carbamate