Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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. CCP(=S)(OCC(C)C)SCN1C(=O)c2ccccc2C1=O
b. O=P(OCCCl)(OCCCl)OCCCl
c. CNC(=O)C=C(C)OP(=O)(OC)OC
d. Cc1c(Cl)c(Br)cc2[nH]c(C(F)(F)F)nc12
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}