{TAIL ~ An azaphthalide} 4 wherein X1 is lower alkoxy, {HEAD ~ Z1} is methyl or phenyl and Y is C6 C8 alkyl 
{ TAIL ~ An azaphthalide } 4 wherein X1 is lower alkoxy , { HEAD ~ Z1 } is methyl or phenyl and Y is C6 C8 alkyl
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH