Using O=C1CCOCC1, COP(=O)(Cc1ccc2nc(Cl)nc(N3CCOCC3)c2n1)OC to produce Clc1nc(N2CCOCC2)c2nc(C=C3CCOCC3)ccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.