Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 11.935\% 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 additional words.
Options:
a) O=c1[nH]nc(Cc2ccccc2)c2ccccc12
b) O=C1CC(=O)C(n2cncn2)C(c2cccc(Cl)c2)C1
c) Cc1cccc(-c2noc(Cc3ccc(Cl)cc3)n2)c1
d) CCN1CCN(c2ncnc3c2nnn3Cc2ccccc2)CC1
Answer: a. O=c1[nH]nc(Cc2ccccc2)c2ccccc12
{#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-benzyl-2H-phthalazin-1-one