Task: Answer the multiple choice question.
Question: Which compound exhibits a 6.335\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a) O=C(CCC(=O)N(CC(=O)NC1CCCCC1)Cc1ccccc1)Nc1ccccn1
b) c1cnc(N2CCN(c3cnccn3)CC2)nc1
c) CCN(C(=O)Cc1c(C(=O)O)[nH]c2ccccc12)c1ccc(OC)cc1
Answer: b. c1cnc(N2CCN(c3cnccn3)CC2)nc1
{#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#}
c1cnc(N2CCN(c3cnccn3)CC2)nc1
c1cnc(N2CCN(c3cnccn3)CC2)nc1
2-(4-pyrazin-2-ylpiperazin-1-yl)pyrimidine