Using C1COCCN1, CC1(C)Cc2c(c(C(=O)O)cc3nc(Nc4c(Cl)cncc4Cl)[nH]c23)O1 to produce CC1(C)Cc2c(c(C(=O)N3CCOCC3)cc3nc(Nc4c(Cl)cncc4Cl)[nH]c23)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.