Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a -1.564\% 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. C/C(O)=C(\C#N)c1nc2ccccc2[nH]1
b. Cc1ccn2c(CNCCn3nc(C)cc3C)c(C(=O)N3CCCCCC3)nc2c1
c. COc1ccc(-n2nnnc2-c2cnc3cc4c(cc3c2C)OCO4)cc1
d. Cc1ccc(NCc2nnc(SCC(=O)NNC(=O)Cc3ccccc3)n2C)cc1
Answer: a. C/C(O)=C(\C#N)c1nc2ccccc2[nH]1
{#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#}
C/C(O)=C(\C#N)c1nc2ccccc2[nH]1
C/C(O)=C(\C#N)c1nc2ccccc2[nH]1
(Z)-2-(1H-benzimidazol-2-yl)-3-hydroxybut-2-enenitrile