Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a S=C1NCCS1
b CN(CCO)c1ccc(N=Nc2c(Cl)cc([N+](=O)[O-])cc2Cl)cc1
c CCNC(=O)OCCSCSP(=S)(OC)OC(C)C
d N#CCC[Si](Cl)(Cl)Cl
e CN1C(=O)CN=C(c2ccccc2F)c2c1ccc(NC(=O)N1CCOCC1)c2Cl
Answer: c
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}