Task: Answer the MCQ question.
Question: Which drug exhibits a 21.919\% 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 Cc1ccc(Nc2nc(CSc3nnc(-c4ccncc4)n3-c3ccccc3C)cs2)cc1
b N#C/C(=C/c1ccc(F)cc1)C(N)=S
c CC(=O)c1cccc(NC(=O)CCNS(=O)(=O)c2cccc3nsnc23)c1
Answer: b. N#C/C(=C/c1ccc(F)cc1)C(N)=S
{#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#}
(Z)-2-cyano-3-(4-fluorophenyl)prop-2-enethioamide