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) CCN1CCN(c2cc3[nH]c(SC4(C)CCC(S(C)(=O)=O)CC4)nc3cc2Cl)CC1
(b) Fc1cccc(OC(CC2CNC2)c2ccc(Cl)c(F)c2)c1
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}
3-[2-(4-chloro-3-fluorophenyl)-2-(3-fluorophenoxy)ethyl]azetidine