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 other words.
Options:
a. CS(=O)(=O)CC(=O)N1CCC(c2ccc(NC(=O)c3nc(C#N)c[nH]3)c(C3=CCCCC3)c2)CC1
b. COc1cc(C(O)CN2CCN(CCc3ccc4c(c3C)COC4=O)CC2)ncc1C#N
c. Clc1ccc([C@@H]2CC=CCNC2)cc1Cl
d. N[C@H]1C[C@@H](N2Cc3nn4cccnc4c3C2)CC[C@@H]1c1cc(F)c(F)cc1F
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}
6-[1-hydroxy-2-[4-[2-(4-methyl-1-oxo-3H-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]-4-methoxypyridine-3-carbonitrile