Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a CCCCCN(CCC12CC3CC(CC(C3)C1)C2)C(=O)NCCCc1ccncc1
b O=C(NC[C@@H](O)CN1CCC(Oc2ccc(Cl)c(Cl)c2)CC1)c1n[nH]c2ccccc12
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
1-[2-(1-adamantyl)ethyl]-1-pentyl-3-(3-pyridin-4-ylpropyl)urea