OEHasExplicitHydrogenExpression
OEHasExplicitHydrogenExpression(arg1: OEQMol) -> bool
Returns true if the query molecule (OEQMolBase) has
any explicit hydrogen(s).
For example, if the query molecule has been initialized from the CO[H]
or [CO[#1,#6]] SMARTS patterns.
See also
OEHasImplicitHydrogenExpressionfunctionSMARTS Pattern Matching chapter