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, b, c, or d without using any additional words.
Options:
a. NC(=O)c1ccc(-c2nc(NCc3ccccn3)c3c(-c4ccccc4)cccc3n2)cn1
b. Cn1c(=O)sc2ccc(-c3ccc(C[C@@H](C#N)NC(=O)[C@@H]4CNCCCO4)cc3)cc21
c. COc1ccc(-c2ccc3c(N4CCOCC4)nc(N4C[C@H](C)O[C@@H](C)C4)nc3n2)cc1CNCCO
d. N#Cc1ccc(S(=O)(=O)NCCN2CC3CN(Cc4c[nH]c5ccccc45)CC(C2)O3)cc1
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}
5-[5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl]pyridine-2-carboxamide