COc1cc(/C=C2\N=C(c3ccccc3)N(c3nc4cc(C)c(C)cc4s3)C2=O)ccc1O
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?