Task: Answer the multiple choice question.
Question: Which drug exhibits a 21.820\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a. CCCCn1nc2cc(C(=O)NC3CCc4ccccc43)ccc2c1OCC
b. CC1(C)CC2CN(C(=O)Cc3ccccc3)C(C)(C2)C1
c. CC1CCN(C(=O)Oc2ccccc2)CC1
d. O=C(NC12CC3CC(CC(C3)C1)C2)c1cc([N+](=O)[O-])ccc1N1CCOCC1
e. C=CCOn1c(=O)c(-c2ccc(OC)c(OC)c2)[n+]([O-])c2ccccc21
Answer: c. CC1CCN(C(=O)Oc2ccccc2)CC1
{#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#}
CC1CCN(C(=O)Oc2ccccc2)CC1
CC1CCN(C(=O)Oc2ccccc2)CC1
phenyl 4-methylpiperidine-1-carboxylate