Task: Answer the MCQ question.
Query: Which compound exhibits a 15.866\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCOC(=O)c1c(-n2c(C)cc(/C=C3/C(=O)NC(=O)N(CC)C3=O)c2C)sc2c1CCCC2
(b) O=c1c2[nH]cnc2n(-c2cccc(Br)c2)c(=O)n1Cc1ccccc1
Answer: b. O=c1c2[nH]cnc2n(-c2cccc(Br)c2)c(=O)n1Cc1ccccc1
{#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=c1c2[nH]cnc2n(-c2cccc(Br)c2)c(=O)n1Cc1ccccc1
O=c1c2[nH]cnc2n(-c2cccc(Br)c2)c(=O)n1Cc1ccccc1
1-benzyl-3-(3-bromophenyl)-7H-purine-2,6-dione