1-Piperidinecarboxamide, N,N'-ethylenebis(N-butyl- 7303-46-0 BRN 1691068 N,N'-Di-n-butyl-N,N'-dicarboxypiperidine-ethylenediamine N,N'-Ethylenebis(N-butyl-1-piperidinecarboxamide) PEY-1401