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S
O
SN
S
O
S
O
S N
H3CO
S N
HO
O
SS
O
H3CO
S N
S
O
S N
S
O
S N
S
O
O
S
O
O
S
O
O
AT CP KS AT HaI CP1 CP2 CP3
CP4 KS HCS ECH1
ECH2 ER KS AT DH CP Cy A PCP
B C D E Cur A Cur F
KS T CP KR DH ER KS AT CP KR DH
Cur H Cur I KS AT CP KR DH ER
Cur J
KS AT CP KR KS AT CP KR ST TE
S
O
S N
KS AT CP KR DH
Cur G
KS AT CP KR DH ER
Cur K
Cur L Cur M S
O
S N
OCH3SNOH
H
H
H
Curacin A
S
O
HO
OH
O
CP3
S
O