Task: Answer the multiple-choice question.
Question: Which drug exhibits a 0.998\% 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: COc1ccc(C2CC(=O)N3CN(Cc4ccco4)CSC3=C2C#N)cc1
b: Cc1nnc2n(-c3ccccc3)c(=O)c3c4c(sc3n12)COC(C)(C)C4
Answer: b. Cc1nnc2n(-c3ccccc3)c(=O)c3c4c(sc3n12)COC(C)(C)C4
{#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#}
Cc1nnc2n(-c3ccccc3)c(=O)c3c4c(sc3n12)COC(C)(C)C4
Cc1nnc2n(-c3ccccc3)c(=O)c3c4c(sc3n12)COC(C)(C)C4
3,12,12-trimethyl-7-phenyl-13-oxa-16-thia-2,4,5,7-tetrazatetracyclo[7.7.0.02,6.010,15]hexadeca-1(9),3,5,10(15)-tetraen-8-one