26605-36-7 L,L-SDAP N-succinyl-L,L-2,6-diaminopimelate N-succinyl-L-2,6-diaminoheptanedioate N-succinyl-LL-2,6-diaminoheptanedioate N-succinyl-LL-2,6-diaminopimelate n-succinylll-2,6-diaminopimelate