Task: Please generate a molecule SMILES based on the text description below.
Description: The molecule is a Good's buffer substance, pKa = 6.8 at 20 ℃. It is a conjugate acid of a 2,2'-piperazine-1,4-diylbisethanesulfonate.
Result: O=S(=O)(O)CCN1CCN(CCS(=O)(=O)O)CC1
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
2-[4-(2-sulfoethyl)piperazin-1-yl]ethanesulfonicacid
The molecule is a Good's buffer substance, pKa = 6.8 at 20 ℃. It is a conjugate acid of a 2,2'-piperazine-1,4-diylbisethanesulfonate.