Task: Answer the MCQ question.
Query: Which drug exhibits a 6.786\% human ether-à-go-go related gene (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) CCC1(C)N=C(N)Nc2nc3cc(C)c(C)cc3n21
(b) O=[N+]([O-])c1ccccc1/C=N/n1c(COc2ccccc2)n[nH]c1=S
(c) C#CC[N+](C)(C)CCCCCCCC.[Br-]
(d) COc1ccc2cc(CCNC(=O)CC(C)(C)C)c(=O)[nH]c2c1
Answer: a. CCC1(C)N=C(N)Nc2nc3cc(C)c(C)cc3n21
{#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#}
CCC1(C)N=C(N)Nc2nc3cc(C)c(C)cc3n21
CCC1(C)N=C(N)Nc2nc3cc(C)c(C)cc3n21
4-ethyl-4,7,8-trimethyl-1H-[1,3,5]triazino[1,2-a]benzimidazol-2-amine