Task: Answer the multiple choice question.
Question: Which drug has a 18.702\% 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) Cc1nc(NCCc2ccccc2)c2oc3ccccc3c2n1
(b) CN(C(=O)CCn1c(=S)oc2ccccc21)C1CCCCC1
Answer: a. Cc1nc(NCCc2ccccc2)c2oc3ccccc3c2n1
{#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#}
Cc1nc(NCCc2ccccc2)c2oc3ccccc3c2n1
Cc1nc(NCCc2ccccc2)c2oc3ccccc3c2n1
2-methyl-N-(2-phenylethyl)-[1]benzofuro[3,2-d]pyrimidin-4-amine