CCOc1ccc(CCNC(=O)C2CCCN(c3nnc(C)c4c(C)n(-c5ccccc5)nc34)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?