Catalyzes the conversion of 2-debenzoyl-7,13-diacetylbaccatin III, a semisynthetic substrate, to 7,13-diacetylbaccatin III. 10-deacetyl-2-debenzoylbaccatin III + benzoyl-CoA = 10-deacetylbaccatin III + CoA Alkaloid biosynthesis; taxol biosynthesis; baccatin III from 10-deacetyl-2-debenzoylbaccatin III: step 1/2. Belongs to the plant acyltransferase family.