| http://www.w3.org/ns/prov#value | - Preferred are an amino, lower alkoxy, halogen atom, carboxy, alkoxycarbonyl, and aralkyloxycarbonyl. ???Optionally substituted??? of ???optionally substituted aryl,??? ???optionally substituted cycloalkyl,??? ???optionally substituted aryloxy,??? ???optionally substituted aralkyloxy,??? and ???optionally substituted arylthio??? at R11 means that the group may have 1 to 3 substituent(s) on the ring
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