[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][Ring1][C][N][N]"}, {"from": "gpt", "value": "The molecule is an organic compound that is used as a building block for the production of many other chemical products. It is also used as an excipient in many pharmacological preparations such as creams. Notably, ethylenediamine is a contact sensitizer capable of producing local and generalized reactions. Sensitivity to ethylenediamine may be identified with a clinical patch test."}]