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. 2015 Jul 21;20(7):13165–13204. doi: 10.3390/molecules200713165
R1 R2 R3 R4 R5 R6 R7
268 OH H OMe H H OMe OH
269 OH H OMe OMe H OMe OH
270 OH H OMe H OMe OH OMe
271 OMe H OMe H OMe OH OMe
272 OH OH H H OMe OH OMe