Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a -2.028\% 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: c1ccc(-c2nc3ccccc3nc2-c2ccccn2)nc1
b: COc1ccc(S(=O)(=O)N(C)CC(=O)NCCN2CCOCC2)cc1
c: O=C(N/N=C/c1cccc(O)c1)c1cc(-c2ccc3c(c2)OCO3)n[nH]1
d: O=C(CN1CCCC1)Nc1c(Cl)cccc1Cl
Answer: a. c1ccc(-c2nc3ccccc3nc2-c2ccccn2)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#}
c1ccc(-c2nc3ccccc3nc2-c2ccccn2)nc1
c1ccc(-c2nc3ccccc3nc2-c2ccccn2)nc1
2,3-dipyridin-2-ylquinoxaline