User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is a cationic sphingoid resulting from the protonation of the amino group of L-erythro-sphingosine; major species at pH 7.3. It is a conjugate acid of a L-erythro-sphingosine. It is an enantiomer of a sphingosine(1+).
Assistant: This is a molecule that fits this description: CCCCCCCCCCCCC/C=C/[C@H](O)[C@H]([NH3+])CO
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
[(E,2R,3S)-1,3-dihydroxyoctadec-4-en-2-yl]azanium
The molecule is a cationic sphingoid resulting from the protonation of the amino group of L-erythro-sphingosine; major species at pH 7.3. It is a conjugate acid of a L-erythro-sphingosine. It is an enantiomer of a sphingosine(1+).