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) CN(Cc1ccc(F)cc1)c1cc(C(=O)Nc2nncs2)ncn1
(b) Cc1ncc(CNC2CCN(CCn3c(=O)ccc4ncc(F)cc43)CC2)cc1C#N
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}
6-[(4-fluorophenyl)methyl-methylamino]-N-(1,3,4-thiadiazol-2-yl)pyrimidine-4-carboxamide