Task: Answer the multiple choice question.
Question: Which compound has a 31.248\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a.) NCCS(=O)(=O)O
b.) O=C(COc1ccc(S(=O)(=O)N2CCCC2)cc1)NCCC1=CCCCC1
c.) O=C(Nc1ccc(N2CCOCC2)cc1N1CCOCC1)c1ncoc1-c1cccc(F)c1
Answer: a. NCCS(=O)(=O)O
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
NCCS(=O)(=O)O
NCCS(=O)(=O)O
2-aminoethanesulfonicacid