(2-(6-Azaspiro(2.5)oct-6-yl)ethyl)guanidinium sulphate (2:1);Guanidine, (2-(6-azaspiro(2.5)oct-6-yl)ethyl)-, sulfate (2:1);bis[2-(6-azaspiro[2.5]oct-6-yl)-N-carbamimidoylethanaminium] sulfate
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