Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a. Nc1nc(NC(=O)c2ccc(F)cc2)ns1
b. COC(=O)COc1ccc2c(c1C)O/C(=C\c1ccco1)C2=O
c. COc1cc2c(cc1OC)CN(c1nc(CN3CCCC3)nc3sc(C)c(C)c13)CC2
d. Cc1ccc(N=c2c([N+](=O)[O-])nn(-c3ccccc3)n2O)c(C)c1
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}