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 additional words.
Options:
a.) CCOC(=O)NCCc1ccccc1-c1ccc([C@H]2CNCC[C@@H]2c2ccn(C)c(=O)c2)c(Cl)c1
b.) COc1ccc2c(NC[C@H](O)CO)nc(C#N)c(-c3ccccc3)c2c1
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 N-[2-[2-[3-chloro-4-[(3S,4S)-4-(1-methyl-2-oxopyridin-4-yl)piperidin-3-yl]phenyl]phenyl]ethyl]carbamate