Task: Answer the MCQ question.
Query: Which drug exhibits a -5.365% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a Cn1c(Cc2nc3ccccc3n2C)nc2ccccc21
b O=C1CCCC2=C1C(c1ccccc1O)C1=C(CCCC1=O)O2
Answer: b. O=C1CCCC2=C1C(c1ccccc1O)C1=C(CCCC1=O)O2
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C1CCCC2=C1C(c1ccccc1O)C1=C(CCCC1=O)O2
O=C1CCCC2=C1C(c1ccccc1O)C1=C(CCCC1=O)O2
9-(2-hydroxyphenyl)-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione