[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an organic cation obtained by protonation of the secondary amino function of methamphetamine. It is a conjugate acid of a methamphetamine."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][NH2+1][C]"}]