Task: Answer the MCQ question.
Query: Which drug exhibits a 6.250\% 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(S(=O)(=O)/C(C#N)=C/Nc2ccc(NC(C)=O)cc2)cc1
b: CN1CCN(NC(=O)c2ccc(Cl)cc2Cl)CC1
c: CNCC[C@H](Oc1cccc2ccccc12)c1cccs1.Cl
d: CCOc1ccc2oc(C(=O)OCC(=O)N3CCCC(C)C3)c(C)c2c1
Answer: b. CN1CCN(NC(=O)c2ccc(Cl)cc2Cl)CC1
{#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#}
CN1CCN(NC(=O)c2ccc(Cl)cc2Cl)CC1
CN1CCN(NC(=O)c2ccc(Cl)cc2Cl)CC1
2,4-dichloro-N-(4-methylpiperazin-1-yl)benzamide