prov:value
| - up CH2 COOR3, CH(COOR13)2, CH2 CONHR9, CH2 CONR9 2, CR5 (COOR13)2, CH(CN)CO2 R13, (CH2)n SO3 - M1, (CH2)n COR13, CH(COR9)CH2 COR9 and CH(R5)COR9 where n, M1 and R5 are as hereinbefore defined and R13 is a hydrogen atom, an alkyl group or a group M1 or R9.
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