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 other words.
Options:
a) CCOC(=O)C1=C(CN2CC(C)(C)OC[C@H]2C(=O)O)NC(c2nccs2)=N[C@H]1c1ccc(F)cc1Br
b) C1CCC2(C1)C1CN(CC3CC3)CC2CN(CC2CC2)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}
3,7-bis(cyclopropylmethyl)spiro[3,7-diazabicyclo[3.3.1]nonane-9,1'-cyclopentane]