Task: Answer the MCQ question.
Question: Which drug exhibits a 3.635\% 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=C(c1ccccc1)N1CCN(c2ccc([N+](=O)[O-])c(N3CCOCC3)c2)CC1
[b] C/C(=N\N=C1\NC(=O)CC(C(=O)O)S1)c1ccc(F)cc1
[c] Brc1ccc(N=C(c2ccccc2)c2ccncc2)cc1
[d] COC(=O)C(NC(=O)c1ccc(C)cc1)(Nc1cccc(C)n1)C(F)(F)F
Answer: a. O=C(c1ccccc1)N1CCN(c2ccc([N+](=O)[O-])c(N3CCOCC3)c2)CC1
{#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#}
O=C(c1ccccc1)N1CCN(c2ccc([N+](=O)[O-])c(N3CCOCC3)c2)CC1
O=C(c1ccccc1)N1CCN(c2ccc([N+](=O)[O-])c(N3CCOCC3)c2)CC1
[4-(3-morpholin-4-yl-4-nitrophenyl)piperazin-1-yl]-phenylmethanone