Bacitracin

CCC (C) C1C (=O) NC (C (=O) NC (C (=O) NC (C (=O) NC (C (=O) NCCCCC (C (=O) NC (C (=O) N1) CCCN) NC (=O) C (C (C) CC) NC (=O) C (CCC (=O) O) NC (=O) C (CC (C) C) NC (=O) C2CSC (=N2) C (C (C) CC) N) CC (=O) N) CC (=O) O) CC3=CN=CN3) CC4=CC=CC=C4

Bacitracin is a mixture of related cyclic polypeptides produced by organisms of the licheniformis group of Bacillus subtilis var Tracy, which disrupts both gram positive and gram negative bacteria by interfering with cell wall and peptidoglycan synthesis.