[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=NH1+1][C][C][C][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is an iminium ion obtained by protonation of the imino group of 2-methyl-1-pyrroline. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate acid of a 2-methyl-1-pyrroline."}]