Task: Answer the MCQ question.
Question: Which drug has a 19.321\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] CCCn1nnnc1NCc1ccc(OC)cc1OC
[b] O=C(NCC(=O)N(Cc1ccc(F)cc1)C(C(=O)NC1CCCC1)c1ccco1)c1ccco1
[c] COC(=O)c1ccc(C(=O)OC)c(NC(=O)CN2CCN(c3ccc(OC)cc3)CC2)c1
[d] Cc1cc(NC(=O)CCSc2ccccc2)ccc1Br
Answer: a. CCCn1nnnc1NCc1ccc(OC)cc1OC
{#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#}
CCCn1nnnc1NCc1ccc(OC)cc1OC
CCCn1nnnc1NCc1ccc(OC)cc1OC
N-[(2,4-dimethoxyphenyl)methyl]-1-propyltetrazol-5-amine