C. an amount sufficient to promote curing of {HEAD ~ said composition} of {TAIL ~ a platinum} containing catalyst; and 
of
C. an amount sufficient to promote curing of { HEAD ~ said composition } of { TAIL ~ a platinum } containing catalyst ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH