Problem statement: Answer the multiple choice question.
Question: Which drug has a 16.875\% 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 CCOC(=O)Cn1c(=O)n(Cc2ccco2)c(=O)c2ccc(C(=O)NCCc3ccccc3)cc21
b O=C(O)CCCn1c(=S)[nH]c2c(sc3ccc([N+](=O)[O-])cc32)c1=O
c COc1ccccc1OCC(O)COC(N)=O
d Cc1cc(N2CCC(C)CC2)n2ncc(-c3ccccc3)c2n1
Answer: b. O=C(O)CCCn1c(=S)[nH]c2c(sc3ccc([N+](=O)[O-])cc32)c1=O
{#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#}
4-(8-nitro-4-oxo-2-sulfanylidene-1H-[1]benzothiolo[3,2-d]pyrimidin-3-yl)butanoic acid