COCC(C)n1c(C)cc(C(=O)CN2C(=O)NC(Cc3c[nH]c4ccccc34)C2=O)c1C
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?