Task: Answer the MCQ question.
Query: Which compound has a 4.463\% 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 other words.
Options:
a: Cc1ccc([N+](=O)[O-])cc1S(=O)(=O)Nc1cccc(-c2ccc(N3CCCC3)nn2)c1
b: COc1ccc(NC(=O)Nc2ccc3nsnc3c2)cc1
c: CN1OC[C@@H]2COc3ccc4ccccc4c3[C@@H]21
d: CCN(CC)C(=O)c1cn(CCC#N)nc1-c1ccc2c(c1)OCCO2
Answer: b. COc1ccc(NC(=O)Nc2ccc3nsnc3c2)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(NC(=O)Nc2ccc3nsnc3c2)cc1
COc1ccc(NC(=O)Nc2ccc3nsnc3c2)cc1
1-(2,1,3-benzothiadiazol-5-yl)-3-(4-methoxyphenyl)urea