Task: Answer the MCQ question.
Query: Which drug exhibits a 5.636\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: COc1ccc(C)cc1S(=O)(=O)N(CC(=O)Nc1cccc([N+](=O)[O-])c1)c1ccc(C)cc1
b: OC1CCNC(=S)N1c1ccccc1
c: CCOC(=O)c1cc(-c2ccccc2C)n(CC2CC(c3cccc([N+](=O)[O-])c3)=NO2)n1
d: O=C(O)c1cn(-c2ccc(F)cc2)c2cc(Cl)c(F)cc2c1=O
Answer: b. OC1CCNC(=S)N1c1ccccc1
{#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#}
OC1CCNC(=S)N1c1ccccc1
OC1CCNC(=S)N1c1ccccc1
6-hydroxy-1-phenyl-1,3-diazinane-2-thione