The basic operation sequence of small molecule pharmacophore modeling is:

A、Preparation of receptor molecules, preparation of ligand molecules, construction of pharmacophore models, analysis and verification of models;
B、Ligand molecule preparation, receptor molecule preparation, pharmacophore model construction, model analysis and verification;
C、Preparation of receptor molecules, extraction of pharmacodynamic characteristic elements, construction of pharmacophore models, analysis and verification of models;
D、Preparation of ligand molecules, extraction of pharmacodynamic characteristic elements, construction of pharmacophore models, analysis and verification of models