R1 =CO2 R3 ; P2 ; P ; SO3 R3 ; or {TAIL ~ CONHR3} in {HEAD ~ any combination} 
R1 = CO2 R3 ; P2 ; P ; SO3 R3 ; or { TAIL ~ CONHR3 } in { HEAD ~ any combination }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD