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, or c without using any additional words.
Options:
a. C[C@@H]1CN(CC2(C(N)=O)CC2)CCN1S(=O)(=O)c1ccc([C@@](C)(O)C(F)(F)F)cc1
b. Nc1ncnc2c1c(-c1cnc3[nH]ccc3c1)nn2C1CCCC1
c. CCCCN1CCC[C@@H]1Cn1nc(Cc2ccc(Cl)cc2)c2cnccc2c1=O
Answer: c
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-[[(2R)-1-butylpyrrolidin-2-yl]methyl]-4-[(4-chlorophenyl)methyl]pyrido[3,4-d]pyridazin-1-one