Taylor coefficients of 3 e^x cos 2x

Let $f:\mathbb{R}\to\mathbb{R}$ be the function defined by $f(x)=3e^{x}\cos 2x$. If $p(x)=ax^{3}+bx^{2}+cx+d$ is the third degree Taylor polynomial of $f$ at $x=0$, then $|a|+|b|+|c|+|d|$ equals __________ (in integer)