Using COCn1c(=O)c2cccnc2c2cc(OCCN(C)C)ccc21 to produce COCn1c(=O)c2c(c3cc(OCCN(C)C)ccc31)NCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.