prov:value
| - up R18???O???, R19SO2???O??? or ???R22, a group ???X???R18, a nitrooxy group, a straight-chain or branched-chain, saturated or unsaturated, partially or completely halogenated hydrocarbon radical with up to 10 carbon atoms or an optionally substituted aryl, heteroaryl or aralkyl radical, X is an oxygen or sulfur atom, R11???, R14, R15, R15??? and R16 each mean a hydrogen atom, and R17 and R17??? m
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