PM3 (Parametric Method 3) is a semiempirical molecular orbital (MO) method used for quantum mechanical calculations. Validating the PM3 semiempirical method involves confirming that the results obtained from these calculations align well with experimental data or more accurate theoretical methods. This step is crucial to ensure the reliability of the computational approach.
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6-benzoyl-5-(4-nitrophenyl)-7-phenyl-2-thiooxo-2,3,5,8-tetrahydropyrido[2,3-d]pyrimidin-4(1H)-one
