Problem statement: Answer the MCQ question.
Question: Which compound exhibits a -19.183\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] CCCc1[nH]nc2c1C(c1ccc(OC)c(Cn3nc(C)c(Br)c3C)c1)C(C#N)=C(N)O2
[b] COCCN1C(=O)N[C@@H](c2ccc(Br)cc2)C(C(=O)OC)=C1C
[c] Cc1cc(C)[n+](Cc2ccccc2)cc1C(N)=O.[Cl-]
[d] COc1ccc(Cl)cc1NC(=O)CC1S/C(=N/N=C2CCCCCC2)NC1=O
Answer: b. COCCN1C(=O)N[C@@H](c2ccc(Br)cc2)C(C(=O)OC)=C1C
{#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#}
COCCN1C(=O)N[C@@H](c2ccc(Br)cc2)C(C(=O)OC)=C1C
COCCN1C(=O)N[C@@H](c2ccc(Br)cc2)C(C(=O)OC)=C1C
methyl (6S)-6-(4-bromophenyl)-3-(2-methoxyethyl)-4-methyl-2-oxo-1,6-dihydropyrimidine-5-carboxylate