Task: Answer the MCQ question.
Query: Which compound has a -0.551\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=C(CNc1ccccc1)N/N=C/c1ccc([N+](=O)[O-])cc1
b: COc1ccc(-c2nc(N3CCN(C)CC3)sc2-c2ccc(OC)cc2)cc1
Answer: b. COc1ccc(-c2nc(N3CCN(C)CC3)sc2-c2ccc(OC)cc2)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#}
COc1ccc(-c2nc(N3CCN(C)CC3)sc2-c2ccc(OC)cc2)cc1
COc1ccc(-c2nc(N3CCN(C)CC3)sc2-c2ccc(OC)cc2)cc1
4,5-bis(4-methoxyphenyl)-2-(4-methylpiperazin-1-yl)-1,3-thiazole