Task: Answer the multiple choice question.
Query: Which compound exhibits a 21.465\% human ether-à-go-go related gene (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: COC(=O)C(NC(C)=O)(Nc1ccc(Br)cc1)C(=O)OC
b: COc1ccc(NC2CCCN(C(=O)CCc3cn[nH]c3)C2)cc1
c: O=C1c2ccccc2C(=O)N1OCc1cccc(Cl)c1
d: O=P(C(c1ccc2c(c1)OCO2)N1CCOCC1)(N1CCOCC1)N1CCOCC1
Answer: a. COC(=O)C(NC(C)=O)(Nc1ccc(Br)cc1)C(=O)OC
{#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#}
dimethyl2-acetamido-2-(4-bromoanilino)propanedioate