Please give a reasonable mechanism for the following reactio

Please give a reasonable mechanism for the following reaction using multiple component reactions.

Ph 0 otuene OCsHs +IN-Ph 67% Ph (+10% CSAI (+ 5 eq. TEA) O Ph

Firstly amine and aldehyde react to form imind

E .and then imine having nitrogen containing lone pair then it will react with CN and form s closing ring and gain a aromatic character.