Modeling the anti-Methicillin-Resistant Staphylococcus aureus (MRSA) Activity of (E)-6-chloro-N2-phenyl-N4-(4-Phenyl-5-(Phenyl Diazinyl)-2λ3, 3 λ2- Thiazol-2-yl)-1, 3, 5-Triazine-2,4- Diamine