Task: Answer the multiple choice question.
Query: Which drug exhibits a 6.620\% 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: O=C(Nc1cccc2cccnc12)c1ccc(Cl)cc1
b: COc1cccc(-c2c(NC(=O)c3ccco3)oc3ccc(Cl)cc3c2=O)c1
c: O=c1[nH]c(Cc2ccccn2)nc2scc(-c3ccc(Cl)cc3)c12
d: CCOC(=O)/C(C#N)=C1/C=Cc2ccccc2N1CC
Answer: d. CCOC(=O)/C(C#N)=C1/C=Cc2ccccc2N1CC
{#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#}
CCOC(=O)/C(C#N)=C1/C=Cc2ccccc2N1CC
CCOC(=O)/C(C#N)=C1/C=Cc2ccccc2N1CC
ethyl (2Z)-2-cyano-2-(1-ethylquinolin-2-ylidene)acetate