Task: Answer the multiple-choice question.
Query: Which drug has a 6.105\% 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(NNC(=O)c1cc(-c2ccncc2)nc2ccccc12)c1ccccc1O
b: COc1cccc(CNC(=O)CCCNS(=O)(=O)c2cccs2)c1
c: O=C1CCC([N+](=O)[O-])C(c2ccccc2Br)N1
d: CCc1nc(N[C@@H](Cc2c[nH]c3ccccc23)C(=O)O)c2oc3ccccc3c2n1
Answer: a. O=C(NNC(=O)c1cc(-c2ccncc2)nc2ccccc12)c1ccccc1O
{#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(NNC(=O)c1cc(-c2ccncc2)nc2ccccc12)c1ccccc1O
O=C(NNC(=O)c1cc(-c2ccncc2)nc2ccccc12)c1ccccc1O
N'-(2-hydroxybenzoyl)-2-pyridin-4-ylquinoline-4-carbohydrazide