Task: Answer the multiple-choice question.
Question: Which drug exhibits a 10.014\% 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 additional words.
Options:
a. CCCCNc1cnn(-c2ccccc2)c(=O)c1Cl
b. O=c1[nH]cnc2nn(-c3ccccc3)nc12
c. O=S(=O)(c1cccs1)N1CCC(CO)(Cc2ccc(Cl)cc2)CC1
d. CCOc1ccc2nc(SCC(=O)N3c4ccccc4Sc4ccccc43)sc2c1
Answer: a. CCCCNc1cnn(-c2ccccc2)c(=O)c1Cl
{#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#}
CCCCNc1cnn(-c2ccccc2)c(=O)c1Cl
CCCCNc1cnn(-c2ccccc2)c(=O)c1Cl
5-(butylamino)-4-chloro-2-phenylpyridazin-3-one