Task: Answer the MCQ question.
Question: Which drug has a 18.683\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a. CCOc1ccc(-c2nnc(-c3snc(-c4ccc(F)cc4)c3N=CN(C)C)o2)cc1
b. O=c1[nH]c2c(cnn2-c2ccc(Cl)cc2)c(=O)n1-c1cccc(Cl)c1
c. COc1ccccc1-c1c(C(F)(F)F)oc2cc(OC(=O)c3cccc([N+](=O)[O-])c3C)ccc2c1=O
Answer: b. O=c1[nH]c2c(cnn2-c2ccc(Cl)cc2)c(=O)n1-c1cccc(Cl)c1
{#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#}
O=c1[nH]c2c(cnn2-c2ccc(Cl)cc2)c(=O)n1-c1cccc(Cl)c1
O=c1[nH]c2c(cnn2-c2ccc(Cl)cc2)c(=O)n1-c1cccc(Cl)c1
5-(3-chlorophenyl)-1-(4-chlorophenyl)-7H-pyrazolo[3,4-d]pyrimidine-4,6-dione