Using CCOC(=O)CP(=O)(OCC)OCC, Cc1nn(Cc2ccc(OCc3nc(-c4ccccc4)oc3C)cc2)c(C)c1C=O to produce CCOC(=O)/C=C/c1c(C)nn(Cc2ccc(OCc3nc(-c4ccccc4)oc3C)cc2)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.