Task: Answer the multiple choice question.
Question: Which drug has a 18.604\% 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: COCCCNC(=O)Nc1ccc(F)cc1F
b: COc1cc(C(=O)CCC(=O)O)c(OC)cc1C
c: Cc1ccc(NCN2C(=O)C3C4C=CC(C4)C3C2=O)cc1
d: Nc1nc2ccccc2n1/N=C/c1ccc(Br)cc1
Answer: b. COc1cc(C(=O)CCC(=O)O)c(OC)cc1C
{#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#}
COc1cc(C(=O)CCC(=O)O)c(OC)cc1C
COc1cc(C(=O)CCC(=O)O)c(OC)cc1C
[C][O][C][=C][C][Branch1][N][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O][=C][Branch1][Ring1][O][C][C][=C][Ring1][#C][C]
4-(2,5-dimethoxy-4-methylphenyl)-4-oxobutanoic acid