[EGrouped [ESubsup (EIdentifier "D") (EIdentifier "x") (ENumber "2"),ESymbol Op "=",ESubsup (EIdentifier "D") (EGrouped [EUnder (EIdentifier "x") (EUnary "\\phantom" (EGrouped [ENumber "0"]))]) (EGrouped [EOver (ENumber "2") (EUnary "\\phantom" (EGrouped [ENumber "0"]))])]]