Task: Answer the multiple-choice question.
Question: Which compound exhibits a 13.921\% 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 additional words.
Options:
a) COc1ccc(CN2CCc3ccccc3C2)cc1Br
b) OCCSc1nc(-c2cccnc2)nc2ccccc12
c) COc1ccccc1NC(=O)c1sc2nc(N3CCOCC3)c3c(c2c1N)CCCC3
d) COc1cccc(NC(=O)c2sc3ncn(CC(=O)N4CCN(c5ccccn5)CC4)c(=O)c3c2C)c1
Answer: a. COc1ccc(CN2CCc3ccccc3C2)cc1Br
{#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#}
COc1ccc(CN2CCc3ccccc3C2)cc1Br
COc1ccc(CN2CCc3ccccc3C2)cc1Br
2-[(3-bromo-4-methoxyphenyl)methyl]-3,4-dihydro-1H-isoquinoline