no they're not,
D-bol & Equipoise do, Dianabol & Equipoise are the same except for the methylation that prevents D-bol from breaking down at the liver & increases the concentration of D-bol and cause the side effects as Gyno, water retention etc.
they're subtending to the parent hormone Androsta-1,4-dien-3-one while Deca substends to Estr-4-en-3-one
currently that's impossible for EQ & Deca to share & hit the same receptors