C=CC(C)(C)c1[nH]c2ccc(CC=C(C)C)cc2c1/C=C1\NC(=O)C2(C=C3c4cc(O)cc(OC)c4C(=O)c4c(O)cc(C)c(c43)O2)NC1=O	7-O-methylvariecolortide A