Task: Please answer the multiple choice question.
Question: Which molecules are 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) Cn1cc(-c2cc(F)c3c(c2)[C@]2(COC(N)=N2)c2cc(-c4cccnc4F)ccc2O3)cn1
(b) O=C1OCc2c1cccc2-c1ccc(CCN2CCN(CCc3ccc([N+](=O)[O-])cc3)CC2)cc1
Answer: b
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}
4-[4-[2-[4-[2-(4-nitrophenyl)ethyl]piperazin-1-yl]ethyl]phenyl]-3H-2-benzofuran-1-one