Task: Answer the MCQ question.
Question: Which compound exhibits a 17.007\% human ether-à-go-go related gene (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) O=c1cc2c(nn1Cc1ccccc1)-c1ccccc1CC2
b) O=C(OCc1c(Cl)cccc1Cl)c1cnccn1
c) CC1(C)Cc2c(cnn2-c2ccccc2)-c2c1c1ccccc1n2CC(O)CBr
d) C/C(=N\NC(=O)CSc1nc2ccccc2s1)c1cccnc1
Answer: b. O=C(OCc1c(Cl)cccc1Cl)c1cnccn1
{#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(OCc1c(Cl)cccc1Cl)c1cnccn1
O=C(OCc1c(Cl)cccc1Cl)c1cnccn1
(2,6-dichlorophenyl)methylpyrazine-2-carboxylate