Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) Fc1c(F)c(F)c2[nH]c(C(F)(F)F)nc2c1F
(b) C=CCSC(=S)SC(Cl)(Cl)Cl
(c) O=c1n(CC2CO2)c(=O)n(CC2CO2)c(=O)n1CC1CO1
(d) CC(O)COCC(C)O
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}