Cc1cccc2cc(CN(CC3CCCO3)C(c3nnnn3Cc3ccco3)C(C)C)c(O)nc12
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?