1,4-Piperazinedicarboxamidine, N,N''-bis((p-chlorophenyl)amidino)-2-methyl-, hydrochloride, hydrate (2:4:1) 19803-63-5 N,N''-Bis((p-chlorophenyl)amidino)-2-methyl-1,4-piperazinedicarboxamidine HCl hydrate