CC(C)(C)OC(=O)CC(NC(=O)OC(C)(C)C)C(=O)NC(CCCCNC(=O)OCc1ccccc1)C(=O)NC(C)(C)C(=O)NCCC(=O)OCc1ccccc1
How many heavy atoms like carbon, oxygen, nitrogen, sulfur and other non-hydrogen atoms do the molecule contain?