Task: Answer the multiple choice question.
Query: Which drug exhibits a 1.368\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=c1[nH]cnc2c1C(c1ccc(Cl)cc1)c1c(nc[nH]c1=O)O2
b CCOC(=O)N1CCC(N2C(=O)c3ccccc3C2Nc2ccc3c(c2)OCCO3)CC1
Answer: a. O=c1[nH]cnc2c1C(c1ccc(Cl)cc1)c1c(nc[nH]c1=O)O2
{#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#}
O=c1[nH]cnc2c1C(c1ccc(Cl)cc1)c1c(nc[nH]c1=O)O2
O=c1[nH]cnc2c1C(c1ccc(Cl)cc1)c1c(nc[nH]c1=O)O2
9-(4-chlorophenyl)-2-oxa-4,6,12,14-tetrazatricyclo[8.4.0.03,8]tetradeca-1(10),3(8),4,13-tetraene-7,11-dione