Task: Answer the multiple-choice question.
Query: Which drug exhibits a 0.536\% 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 other words.
Options:
(a) O=C(O)c1[nH]c2ccccc2c1-c1ccccc1
(b) O=C(N/N=C/c1ccccn1)c1ccncc1
(c) Nc1cnc(Br)cc1Br
(d) COc1ccc(CNC(=O)C/C(C)=N/NC(=O)Cc2ccc(OC)c(OC)c2)cc1
Answer: a. O=C(O)c1[nH]c2ccccc2c1-c1ccccc1
{#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#}
O=C(O)c1[nH]c2ccccc2c1-c1ccccc1
O=C(O)c1[nH]c2ccccc2c1-c1ccccc1
3-phenyl-1H-indole-2-carboxylicacid