Task: Answer the MCQ question.
Question: Which compound exhibits a 1.622% human ether-à-go-go related gene (hERG) inhibition at 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a COc1ccc(CC2CCOC2=O)cc1
b CCCC(c1nnnn1Cc1ccco1)N1CCC(C(N)=O)CC1.Cl
c CC1CCN(C(=O)CCNC(=O)Cn2cnc3sc4c(c3c2=O)CCCC4)CC1
d CC(C)Oc1ccc(/C(O)=C2/C(=O)C(=O)N(CCN3CCNCC3)C2c2cccc([N+](=O)[O-])c2)cc1
Answer: a. COc1ccc(CC2CCOC2=O)cc1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COc1ccc(CC2CCOC2=O)cc1
COc1ccc(CC2CCOC2=O)cc1
3-[(4-methoxyphenyl)methyl]oxolan-2-one