Abbreviated Group StrCh

Checker searches for abbreviated groups in the structure *
Options:
- expanded (:expanded=true);
- contracted (:contracted=true);
- both expanded and contracted groups (default).
You can specify a list of excluded abbreviated groups, i.e., checker will not find (and fix) abbreviated groups that are indicated in this list. Default and custom abbreviations are also possible to set. The excluded list elements are case sensitive and should be separated by commas (,). (:excluded=Ph,Ala,Gly,MyGroup)

excluded list
Fixer offers(in order of priority):
- ungroup abbreviated groups (ungroup);
- expand abbreviated groups (expandgroup);
- contract abbreviated groups (contractgroup).

Example :

Abbreviated Group Checker (`abbrevgroup`)	Warning:	Fix
		Ungroup (`ungroup`)	Expand Group (`expandgroup`)	Contract Group (`contractgroup`)
Detect Expanded Groups	ex_abbrev_exp_ch	ex_abbrev_contr_f	unavailable	ex_abbrev_contr_f
Detect Contracted Groups	ex_abbrev_contr_f	ex_abbrev_contr_f	ex_abbrev_contr_f	unavailable
Detect All Groups	ex_abbrev_both_ch	ex_abbrev_both_f	ex_abbrev_both_fex	ex_abbrev_both_fcontr
Detect Contracted Groups with excluded list	ex_abbrev_exclude_ch	ex_abbrev_exclude_f	ex_abbrev_exclude_f	ex_abbrev_both_fcontr

^* User defined abbreviated groups are also available to be applied as recognizable abbreviated group set.

If attachment point is not connected to any atom, ungrouping removes attachment points of the abbreviated group and adds an implicit hydrogen.