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 CCCC1NC(c2cc(C#N)ccn2)=NC1(c1ccc(F)cc1)c1ccc(F)cc1
b Cc1c(Cl)cccc1C(=O)N(CC(C)C)C1CCNC1
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}
2-[4,4-bis(4-fluorophenyl)-5-propyl-1,5-dihydroimidazol-2-yl]pyridine-4-carbonitrile