COc1ccc(C[C@H]2CN3C(=NC[C@@H]3Cc3ccccc3)N2CCNC(=O)c2ccc(C)c(Br)c2)cc1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?