Task: Answer the multiple choice question.
Question: Which drug exhibits a 4.365\% 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 additional words.
Options:
a.) O=C1CC(c2ccc(O)cc2)Oc2ccccc21
b.) CC(=NCCN1CCCCC1)c1c(O)n(-c2ccc(Cl)cc2)c(=O)[nH]c1=O
c.) CCN=C1Cn2c(nc3scc(-c4ccccc4)c3c2=O)CN1CC
d.) Cl.O=C(CN1CCOCC1)NCC12CC3CC(CC(C3)C1)C2
Answer: a. O=C1CC(c2ccc(O)cc2)Oc2ccccc21
{#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=C1CC(c2ccc(O)cc2)Oc2ccccc21
O=C1CC(c2ccc(O)cc2)Oc2ccccc21
2-(4-hydroxyphenyl)-2,3-dihydrochromen-4-one