Task: Answer the MCQ question.
Query: Which drug exhibits a 15.872\% 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. Cc1ccc(S(=O)(=O)N2CCCC(C(=O)NCc3cccnc3)C2)cc1Cl
b. CCc1nnc(NC(=O)CSc2nc3c(c(=O)n2C)SC(C)C3)s1
c. N#Cc1c(/N=C\c2ccc(O)c([N+](=O)[O-])c2)sc2c1CCCC2
d. CCOC(=O)c1cnc(SCC(=O)c2ccc(Cl)cc2)nc1N
Answer: d. CCOC(=O)c1cnc(SCC(=O)c2ccc(Cl)cc2)nc1N
{#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#}
ethyl4-amino-2-[2-(4-chlorophenyl)-2-oxoethyl]sulfanylpyrimidine-5-carboxylate