Problem statement: Answer the MCQ question.
Question: Which compound exhibits a 20.450\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: Cc1nc(N=C(N)N)nc2ccccc12
b: O=C(Oc1ccc(-c2cnc3ccccc3n2)cc1)c1ccco1
Answer: a. Cc1nc(N=C(N)N)nc2ccccc12
{#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#}
Cc1nc(N=C(N)N)nc2ccccc12
Cc1nc(N=C(N)N)nc2ccccc12
2-(4-methylquinazolin-2-yl)guanidine