CCCn1c(=O)n(C)c(=O)c2c(SCC(=O)NCC(c3ccccc3)N(C)C)nc(CC(C)C)nc21
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?