Task: Answer the multiple-choice question.
Question: Which compound exhibits a 2.454% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) COC(=O)C1=C(c2cccc(OC)c2OC)C[C@@H]2CC[C@H]1N2C(=O)NCC1CC1
(b) COc1cc2[nH]c3ccccc3c2cc1C
(c) C=CCNC(=O)c1ccc2c(c1)N(CC)C(=O)c1ccccc1S2
Answer: b. COc1cc2[nH]c3ccccc3c2cc1C
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COc1cc2[nH]c3ccccc3c2cc1C
COc1cc2[nH]c3ccccc3c2cc1C
2-methoxy-3-methyl-9H-carbazole