Problem statement: Answer the MCQ question.
Query: Which compound exhibits a 18.679\% 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 O=C(NCCN1CCCC1)c1ccc(Cn2c(=S)[nH]c3cc4c(cc3c2=O)OCO4)cc1
b O=C1c2ccccc2S(=O)(=O)N1CC1CC(c2ccccc2)=NO1
c COc1c(S(=O)(=O)N2CCN(c3ccc(F)cc3)CC2)ccc(Cl)c1Cl
d CCSc1ncnc2c1oc1ccccc12
Answer: d. CCSc1ncnc2c1oc1ccccc12
{#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#}
CCSc1ncnc2c1oc1ccccc12
CCSc1ncnc2c1oc1ccccc12
4-ethylsulfanyl-[1]benzofuro[3,2-d]pyrimidine