Task: Please generate a molecule SMILES based on the description below.
Description: 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+).
Result: CCCCCCCCCCCCC/C=C/[C@H](O)[C@H]([NH3+])CO
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {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+).