Task: Answer the MCQ question.
Question: Which compound has a -1.273\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCc1nc(NCC2CCCO2)c2oc3ccccc3c2n1.Cl
(b) Cc1ccc(-c2[nH]ncc2/C=N/n2c(COc3ccccc3)nc3ccccc3c2=O)cc1
Answer: a. CCc1nc(NCC2CCCO2)c2oc3ccccc3c2n1.Cl
{#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#}
CCc1nc(NCC2CCCO2)c2oc3ccccc3c2n1.Cl
CCc1nc(NCC2CCCO2)c2oc3ccccc3c2n1.Cl
2-ethyl-N-(oxolan-2-ylmethyl)-[1]benzofuro[3,2-d]pyrimidin-4-amine;hydrochloride