Task: Answer the multiple-choice question.
Query: Which compound exhibits a 22.279\% 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: O=C(OCn1ncc(Cl)c(Cl)c1=O)c1cccc(C(F)(F)F)c1
b: CCc1nc2sc3c(c2c(=O)o1)CCCC3
c: CCn1c(=O)c2c(nc(SCC(=O)NCC3CCCO3)n2C)n(C)c1=O
d: COc1ccc(C(=O)NCCS(=O)(=O)NCc2ccco2)cc1
Answer: b. CCc1nc2sc3c(c2c(=O)o1)CCCC3
{#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#}
CCc1nc2sc3c(c2c(=O)o1)CCCC3
CCc1nc2sc3c(c2c(=O)o1)CCCC3
2-ethyl-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one