Task: Answer the multiple choice question.
Question: Which drug exhibits a 13.213\% 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 other words.
Options:
[a] Cc1ccc(C)c(Oc2nnnn2-c2ccccc2)c1
[b] Cc1cc(/C=N/NC(=O)C(O)(c2ccccc2)c2ccccc2)c(C)n1-c1ccc(C(=O)O)cc1
[c] Cn1c(SCC(=O)C(C)(C)C)nnc1-c1ccncc1
[d] Clc1ncc2[nH]cnc2n1
Answer: d. Clc1ncc2[nH]cnc2n1
{#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#}
Clc1ncc2[nH]cnc2n1
Clc1ncc2[nH]cnc2n1
2-chloro-7H-purine