Task: Answer the multiple-choice question.
Query: Which compound exhibits a 18.444\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a. CCn1c(=NC(=O)CSCC(=O)Nc2nccs2)sc2ccccc21
b. Cn1c(-c2ccccc2)cc2onc(-c3ccccc3)c2c1=O
c. Cc1cccc(NC(=O)Nc2cccc(C)n2)n1
d. COc1ccccc1C1c2ccc3ccccc3c2Oc2ncn(CCCO)c(=N)c21
Answer: b. Cn1c(-c2ccccc2)cc2onc(-c3ccccc3)c2c1=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#}
Cn1c(-c2ccccc2)cc2onc(-c3ccccc3)c2c1=O
Cn1c(-c2ccccc2)cc2onc(-c3ccccc3)c2c1=O
5-methyl-3,6-diphenyl-[1,2]oxazolo[4,5-c]pyridin-4-one