Problem statement: Answer the multiple-choice question.
Query: Which compound has a 18.628\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a: O=C(COn1nnc2ccc(C(F)(F)F)cc21)Nc1nnc(-c2ccccc2)o1
b: CCCCOc1ccc2ccccc2c1C=O
c: CC1Cc2ccccc2N1C(=O)CCS(=O)(=O)c1cccs1
d: CCN(CC)C(=O)Oc1ccc(Cl)c2ccccc12
e: COc1ccc2[nH]c(C(=O)O)c(NS(=O)(=O)c3ccc(OC)c(OC)c3)c2c1
Answer: b. CCCCOc1ccc2ccccc2c1C=O
{#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#}
2-butoxynaphthalene-1-carbaldehyde