Task: Answer the multiple choice question.
Query: Which drug exhibits a -5.023% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCOc1ccc(NC(=S)N2CCN(c3ccc(N4CCOCC4)nn3)CC2)cc1
b: CCCCC(=O)Nc1cc(N(C)C)nc2ccccc12
c: O=C(CN1CCOCC1)N1CCN(c2ccc([N+](=O)[O-])cc2)CC1
d: O=C(Nc1cnccn1)C1c2ccccc2Oc2ccccc21
Answer: d. O=C(Nc1cnccn1)C1c2ccccc2Oc2ccccc21
{#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#}
O=C(Nc1cnccn1)C1c2ccccc2Oc2ccccc21
O=C(Nc1cnccn1)C1c2ccccc2Oc2ccccc21
N-pyrazin-2-yl-9H-xanthene-9-carboxamide