C6-PQS PQS AIP-I C7:1-AQ 3-OH-C12-HSL C8-AQ 3-OH-C10-HSL C11:1-AQ 3-oxo-C6-HSL AIP-II 3-oxo-C4-HSL C10-HSL CSP nonapeptide lactone C12-HSL C11-AQ C5-PQS indole 3-oxo-C10-HSL C9-PQS decapeptide C8-HSL GBAP 3-oxo-C8-HSL C11-PQS heptapeptide thiolactone AIP-III CSP-I C9-AQ C4-HSL CAI-1 3-oxo-C14-HSL C6-AQ octapeptide thiolactone C6-HSL C7-HSL C7-AQ CSP-II 3-OH-C4-HSL C14-HSL C16-HSL C8-PQS 3-OH-C8-HSL C5-AQ AI-2 3-oxo-C12-HSL 3-OH-C6-HSL AIP-IV C9:1-AQ