Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. CCOC(=O)c1ccc(CCN2CCN(CCc3ccc([N+](=O)[O-])cc3)CC2)cc1
b. O=C(c1ccccc1Cl)N(CC1CCC1)[C@H]1CCNC1
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}
ethyl 4-[2-[4-[2-(4-nitrophenyl)ethyl]piperazin-1-yl]ethyl]benzoate