Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 19.811\% 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) CN(C(=O)c1ccno1)c1nnc(-c2ccccn2)s1
(b) COc1cc2c(cc1C=O)OC(C)C2
(c) CC1/C(=N\Nc2ccc([N+](=O)[O-])cc2[N+](=O)[O-])CCC1(C(=O)O)c1ccccc1
(d) C=CCn1c(CNC(=O)c2ccco2)nnc1SCC(=O)Nc1cccc(Br)c1
Answer: b. COc1cc2c(cc1C=O)OC(C)C2
{#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#}
COc1cc2c(cc1C=O)OC(C)C2
COc1cc2c(cc1C=O)OC(C)C2
5-methoxy-2-methyl-2,3-dihydro-1-benzofuran-6-carbaldehyde