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2026-08-03 18:42:47 +08:00
from chempy.champ import Champ
ch = Champ()
p1 = ch.insert_pattern_string("C(N)(F)O")
ch.pattern_dump(p1)
ch = Champ()
p1 = ch.insert_pattern_string("C1(N)(F).O1")
ch.pattern_dump(p1)