Task: Answer the MCQ question.
Query: Which compound has a 6.598\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a) O=S1(=O)c2cccc3cccc(c23)N1CCBr
b) Clc1cccc(Oc2cnns2)c1Cl
c) CC1CNCc2c1oc1ccccc21.Cl
d) CCOC(=O)C1=NN(c2ccccc2C)C2=NC(C)=C(C(=O)OC)C(c3cccc(OC)c3)N12
Answer: a. O=S1(=O)c2cccc3cccc(c23)N1CCBr
{#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=S1(=O)c2cccc3cccc(c23)N1CCBr
O=S1(=O)c2cccc3cccc(c23)N1CCBr
3-(2-bromoethyl)-2λ6-thia-3-azatricyclo[6.3.1.04,12]dodeca-1(11),4,6,8(12),9-pentaene 2,2-dioxide