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 additional words.
Options:
a. CNCc1cc(C(F)(F)F)ccc1Oc1ccc(Cl)c(Cl)c1
b. COc1ccc(-c2ccc3c(N4CCOC[C@H]4C)nc(N4CCN(C)CC4)nc3n2)cc1CO
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}
1-[2-(3,4-dichlorophenoxy)-5-(trifluoromethyl)phenyl]-N-methylmethanamine