Task: Answer the multiple choice question.
Question: Which compound exhibits a -21.027\% 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) Cl.O=C(c1ccccc1)c1coc2ccc(O)c(CN3CCOCC3)c12
(b) COc1ccccc1OCCNC(=O)c1cccc(S(=O)(=O)N2CC(C)OC(C)C2)c1
(c) CCOC(=O)c1[nH]c(CSc2nnc(-c3ccc(OC)cc3)o2)c(C(=O)OCC)c1C
Answer: a. Cl.O=C(c1ccccc1)c1coc2ccc(O)c(CN3CCOCC3)c12
{#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#}
Cl.O=C(c1ccccc1)c1coc2ccc(O)c(CN3CCOCC3)c12
Cl.O=C(c1ccccc1)c1coc2ccc(O)c(CN3CCOCC3)c12
[5-hydroxy-4-(morpholin-4-ylmethyl)-1-benzofuran-3-yl]-phenylmethanone;hydrochloride