Task: Answer the MCQ question.
Query: Which compound has a 21.239\% 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) COc1ccc(NC(=O)NNC(=O)c2ccc(Cl)cc2Cl)cc1OC
(b) Cc1csc(NC(=O)CSc2nnc(-c3ccoc3C)n2C(C)c2ccccc2)n1
(c) CCCc1c(C)c2c(C)[nH]nc2oc1=O
(d) CC(C)(C)N(NC(=O)Nc1ccccc1)C(=O)c1ccccc1Cl
Answer: d. CC(C)(C)N(NC(=O)Nc1ccccc1)C(=O)c1ccccc1Cl
{#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#}
1-[tert-butyl-(2-chlorobenzoyl)amino]-3-phenylurea