Problem statement: Answer the MCQ question.
Query: Which drug has a 19.768\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a.) O=C(CSc1ccc2nnc(-c3ccccc3)n2n1)N1CCCc2ccccc21
b.) CCOCCCNC(=S)NCCc1ccccc1
Answer: b. CCOCCCNC(=S)NCCc1ccccc1
{#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#}
CCOCCCNC(=S)NCCc1ccccc1
CCOCCCNC(=S)NCCc1ccccc1
1-(3-ethoxypropyl)-3-(2-phenylethyl)thiourea